diff --git a/app/views/admin/background_jobs/show.html.haml b/app/views/admin/background_jobs/show.html.haml
index 654d261aa997712ba25441fe84508af1ad453ea0..4f680b507c493983d66295c120aebebd6610f200 100644
--- a/app/views/admin/background_jobs/show.html.haml
+++ b/app/views/admin/background_jobs/show.html.haml
@@ -2,7 +2,7 @@
 - page_title "Background Jobs"
 = render 'admin/background_jobs/head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   %h3.page-title Background Jobs
   %p.light GitLab uses #{link_to "sidekiq", "http://sidekiq.org/"} library for async job processing
 
diff --git a/app/views/admin/builds/index.html.haml b/app/views/admin/builds/index.html.haml
index efd5b12cfeb4b182be40679949312c992ad1c9c8..1e60205f91a1e605540e9977d4d91c9c0f3d40ec 100644
--- a/app/views/admin/builds/index.html.haml
+++ b/app/views/admin/builds/index.html.haml
@@ -1,7 +1,7 @@
 - @no_container = true
 = render "admin/dashboard/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
 
   .top-area
     %ul.nav-links
diff --git a/app/views/admin/dashboard/index.html.haml b/app/views/admin/dashboard/index.html.haml
index 4682016a8862378246759a91f7332315993f81c9..a2ac407c159b79d2d6e765538486b454bee659d3 100644
--- a/app/views/admin/dashboard/index.html.haml
+++ b/app/views/admin/dashboard/index.html.haml
@@ -1,7 +1,7 @@
 - @no_container = true
 = render "admin/dashboard/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .admin-dashboard.prepend-top-default
     .row
       .col-md-4
diff --git a/app/views/admin/groups/index.html.haml b/app/views/admin/groups/index.html.haml
index 4f1996ef7ab26de3b261d36ba04aac4540df1f4a..94aa5f5a942f81626e12b2c8af0610c2b3219a9b 100644
--- a/app/views/admin/groups/index.html.haml
+++ b/app/views/admin/groups/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Groups"
 = render "admin/dashboard/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   %h3.page-title
     Groups (#{number_with_delimiter(@groups.total_count)})
 
@@ -39,7 +39,6 @@
       = link_to 'New Group', new_admin_group_path, class: "btn btn-new"
 
   %ul.content-list
-    - @groups.each do |group|
-      = render 'group', group: group
+    = render @groups
 
   = paginate @groups, theme: "gitlab"
diff --git a/app/views/admin/health_check/show.html.haml b/app/views/admin/health_check/show.html.haml
index 7b8407f9152ea221deb516a4d10be2c442e59da0..e79303240f0d6b08deb827865fb0d221ae356617 100644
--- a/app/views/admin/health_check/show.html.haml
+++ b/app/views/admin/health_check/show.html.haml
@@ -2,7 +2,7 @@
 - page_title "Health Check"
 = render 'admin/background_jobs/head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   %h3.page-title
     Health Check
   .bs-callout.clearfix
diff --git a/app/views/admin/logs/show.html.haml b/app/views/admin/logs/show.html.haml
index 5ddc3b9ea85111de9f622ecbf53f3575da5cde04..676812121d773d2901c1b7ca0e3237975a53bbaf 100644
--- a/app/views/admin/logs/show.html.haml
+++ b/app/views/admin/logs/show.html.haml
@@ -5,7 +5,7 @@
              Gitlab::RepositoryCheckLogger]
 = render 'admin/background_jobs/head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   %ul.nav-links.log-tabs
     - loggers.each do |klass|
       %li{ class: (klass == Gitlab::GitLogger ? 'active' : '') }
diff --git a/app/views/admin/projects/index.html.haml b/app/views/admin/projects/index.html.haml
index 4822cb693c2d2b2a99b8fe1ea67bee5b37a8a3a2..7d2eb423223cb02cdaf1a88ef9ceb12d4786e1ef 100644
--- a/app/views/admin/projects/index.html.haml
+++ b/app/views/admin/projects/index.html.haml
@@ -3,7 +3,7 @@
 = render 'shared/show_aside'
 = render "admin/dashboard/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .row.prepend-top-default
     %aside.col-md-3
       .panel.admin-filter
diff --git a/app/views/admin/runners/index.html.haml b/app/views/admin/runners/index.html.haml
index 5eff77aff2db1dd8ce994c47ce7d78ca9ba53a32..114bea92fc25a87ec0d23d842307f41e2dac48f7 100644
--- a/app/views/admin/runners/index.html.haml
+++ b/app/views/admin/runners/index.html.haml
@@ -1,7 +1,7 @@
 - @no_container = true
 = render "admin/dashboard/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
 
   %p.prepend-top-default
     %span
diff --git a/app/views/admin/system_info/show.html.haml b/app/views/admin/system_info/show.html.haml
index 3ef2f20b589cb87f3be0d7b2f35188a2ebc5373d..247db295863e9a3fc0a50180880875ba5724216e 100644
--- a/app/views/admin/system_info/show.html.haml
+++ b/app/views/admin/system_info/show.html.haml
@@ -2,7 +2,7 @@
 - page_title "System Info"
 = render 'admin/background_jobs/head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .prepend-top-default
   .row
     .col-sm-4
diff --git a/app/views/admin/users/index.html.haml b/app/views/admin/users/index.html.haml
index d0a696da64b98d7ab6fd136437adc2502bf9d935..21bb99a792c4fac69e78569e1916e7820c5f998c 100644
--- a/app/views/admin/users/index.html.haml
+++ b/app/views/admin/users/index.html.haml
@@ -3,7 +3,7 @@
 = render 'shared/show_aside'
 = render "admin/dashboard/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .admin-filter
     %ul.nav-links
       %li{class: "#{'active' unless params[:filter]}"}
diff --git a/app/views/groups/show.html.haml b/app/views/groups/show.html.haml
index a0a6762edcf4a9ed150f9171949ccb8887d781dc..69f634e75b9b407c274171ebe447302e75b49526 100644
--- a/app/views/groups/show.html.haml
+++ b/app/views/groups/show.html.haml
@@ -5,7 +5,7 @@
     = auto_discovery_link_tag(:atom, group_url(@group, format: :atom, private_token: current_user.private_token), title: "#{@group.name} activity")
 
 .cover-block.groups-cover-block
-  %div{ class: (container_class) }
+  %div{ class: container_class }
     = link_to group_icon(@group), target: '_blank' do
       = image_tag group_icon(@group), class: "avatar group-avatar s70"
     .group-info
diff --git a/app/views/projects/_home_panel.html.haml b/app/views/projects/_home_panel.html.haml
index 86ea08dd229a81f83b807a3ea40886388bed1126..8ce23379fb4e6af25ffc0f527ed295ea3a3d43a9 100644
--- a/app/views/projects/_home_panel.html.haml
+++ b/app/views/projects/_home_panel.html.haml
@@ -1,6 +1,6 @@
 - empty_repo = @project.empty_repo?
 .project-home-panel.cover-block.clearfix{:class => ("empty-project" if empty_repo)}
-  %div{ class: (container_class) }
+  %div{ class: container_class }
     .row
       .project-image-container
         = project_icon(@project, alt: '', class: 'project-avatar avatar s70')
diff --git a/app/views/projects/_last_push.html.haml b/app/views/projects/_last_push.html.haml
index e0ca2a3109cd97ca8be9c456f6cc672bc2c40f68..434d8644b831e81c884daa565a0664d4ecb041f2 100644
--- a/app/views/projects/_last_push.html.haml
+++ b/app/views/projects/_last_push.html.haml
@@ -1,7 +1,7 @@
 - if event = last_push_event
   - if show_last_push_widget?(event)
     .row-content-block.top-block.clear-block.hidden-xs
-      %div{ class: (container_class) }
+      %div{ class: container_class }
         .event-last-push
           .event-last-push-text
             %span You pushed to
diff --git a/app/views/projects/blob/show.html.haml b/app/views/projects/blob/show.html.haml
index 8d77bdbe382daf000c14d81651d345ab6326ee28..0ab78a39cf9a98f85370a7d71b53fde427fe4dbb 100644
--- a/app/views/projects/blob/show.html.haml
+++ b/app/views/projects/blob/show.html.haml
@@ -2,7 +2,7 @@
 - page_title @blob.path, @ref
 = render "projects/commits/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   = render 'projects/last_push'
 
   %div#tree-holder.tree-holder
diff --git a/app/views/projects/branches/index.html.haml b/app/views/projects/branches/index.html.haml
index e0367c40272bf92cb4f7536cb2573f17631887a5..77b405f1f3977f1d7b51d4ebc35442bb0b03bd98 100644
--- a/app/views/projects/branches/index.html.haml
+++ b/app/views/projects/branches/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Branches"
 = render "projects/commits/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     .nav-text
       Protected branches can be managed in project settings
@@ -27,7 +27,7 @@
                 = sort_title_recently_updated
               = link_to namespace_project_branches_path(sort: 'last_updated') do
                 = sort_title_oldest_updated
-  - unless @branches.empty?
+  - if @branches.any?
     %ul.content-list.all-branches
       - @branches.each do |branch|
         = render "projects/branches/branch", branch: branch
diff --git a/app/views/projects/builds/index.html.haml b/app/views/projects/builds/index.html.haml
index 181547316aabcfe76b347344b4a5ae36a1dfecf0..a131289ee97d9e0767c3fb15a24d795a95928e21 100644
--- a/app/views/projects/builds/index.html.haml
+++ b/app/views/projects/builds/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Builds"
 = render "projects/pipelines/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     %ul.nav-links
       %li{class: ('active' if @scope.nil?)}
diff --git a/app/views/projects/commits/show.html.haml b/app/views/projects/commits/show.html.haml
index 51ca4eb903e547f333847e0db156c918ea0605ef..9a44ba94970cbba016f37bbbd064c9ec9a4ef1ec 100644
--- a/app/views/projects/commits/show.html.haml
+++ b/app/views/projects/commits/show.html.haml
@@ -7,7 +7,7 @@
 
 = render "head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .row-content-block.second-block.content-component-block
     .tree-ref-holder
       = render 'shared/ref_switcher', destination: 'commits'
diff --git a/app/views/projects/compare/index.html.haml b/app/views/projects/compare/index.html.haml
index b22285c11e0df9b55c6681dde869c927460c4bff..e9ff8e90dd56989b1f6577fd0ab6307cedbe5e64 100644
--- a/app/views/projects/compare/index.html.haml
+++ b/app/views/projects/compare/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Compare"
 = render "projects/commits/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block
     Compare branches, tags or commit ranges.
     %br
diff --git a/app/views/projects/compare/show.html.haml b/app/views/projects/compare/show.html.haml
index f4ec7b767f63e1c67469f13d747454753d265502..28a50e7031a14ca45ebd6b329c0d57627b4af008 100644
--- a/app/views/projects/compare/show.html.haml
+++ b/app/views/projects/compare/show.html.haml
@@ -2,7 +2,7 @@
 - page_title "#{params[:from]}...#{params[:to]}"
 = render "projects/commits/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block.no-bottom-space
     = render "form"
 
diff --git a/app/views/projects/environments/index.html.haml b/app/views/projects/environments/index.html.haml
index a03f117291f6d12eaed18e1867551ab6279ac1c8..5242021243e7d5b5debe12886f0ab38bc510f92f 100644
--- a/app/views/projects/environments/index.html.haml
+++ b/app/views/projects/environments/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Environments"
 = render "projects/pipelines/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   - if can?(current_user, :create_environment, @project) && !@environments.blank?
     .top-area
       .nav-controls
diff --git a/app/views/projects/environments/show.html.haml b/app/views/projects/environments/show.html.haml
index 4c15e2759d6033b60284d406e8b57f414e93a430..53c62ef234d4549ac7cb3582932ebaf79489cca2 100644
--- a/app/views/projects/environments/show.html.haml
+++ b/app/views/projects/environments/show.html.haml
@@ -2,7 +2,7 @@
 - page_title "Environments"
 = render "projects/pipelines/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     .col-md-9
       %h3.page-title= @environment.name.titleize
diff --git a/app/views/projects/graphs/ci.html.haml b/app/views/projects/graphs/ci.html.haml
index e695d3ae369ca92585e9288acbd3d3dfe376287e..6be4273b6abbdae6aa19c0dcfc5516c2ece29943 100644
--- a/app/views/projects/graphs/ci.html.haml
+++ b/app/views/projects/graphs/ci.html.haml
@@ -2,7 +2,7 @@
 - page_title "Continuous Integration", "Graphs"
 = render 'head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block
     .oneline
       A collection of graphs for Continuous Integration
diff --git a/app/views/projects/graphs/commits.html.haml b/app/views/projects/graphs/commits.html.haml
index 0daffe68f6fd55fe7c001c983d9fbc708a809fe9..65db8af494d4926cc93a12bd46840c9875a9fee4 100644
--- a/app/views/projects/graphs/commits.html.haml
+++ b/app/views/projects/graphs/commits.html.haml
@@ -2,7 +2,7 @@
 - page_title "Commits", "Graphs"
 = render 'head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block
     .tree-ref-holder
       = render 'shared/ref_switcher', destination: 'graphs_commits'
diff --git a/app/views/projects/graphs/languages.html.haml b/app/views/projects/graphs/languages.html.haml
index 6d97f552a8e83f28b64b6fd1c806405d2ece3c48..fcfcae0be2098df40bd7c76e10e2fd4906faef3c 100644
--- a/app/views/projects/graphs/languages.html.haml
+++ b/app/views/projects/graphs/languages.html.haml
@@ -2,7 +2,7 @@
 - page_title "Languages", "Graphs"
 = render 'head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block
     .oneline
       Programming languages used in this repository
diff --git a/app/views/projects/graphs/show.html.haml b/app/views/projects/graphs/show.html.haml
index 9f7e2a361ff7ddca93806b1f4b02d8659816a53c..a985b442b2d6e6c303c701d1cd702f4c2c948916 100644
--- a/app/views/projects/graphs/show.html.haml
+++ b/app/views/projects/graphs/show.html.haml
@@ -2,7 +2,7 @@
 - page_title "Contributors", "Graphs"
 = render 'head'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block
     .tree-ref-holder
       = render 'shared/ref_switcher', destination: 'graphs'
diff --git a/app/views/projects/issues/index.html.haml b/app/views/projects/issues/index.html.haml
index cd876b5ea62d5aa58f65fc54278c44dd90108dcc..7ce4c1e555568ac146276f0d6452f659267c1c11 100644
--- a/app/views/projects/issues/index.html.haml
+++ b/app/views/projects/issues/index.html.haml
@@ -6,7 +6,7 @@
   - if current_user
     = auto_discovery_link_tag(:atom, namespace_project_issues_url(@project.namespace, @project, :atom, private_token: current_user.private_token), title: "#{@project.name} issues")
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     = render 'shared/issuable/nav', type: :issues
     .nav-controls
diff --git a/app/views/projects/labels/index.html.haml b/app/views/projects/labels/index.html.haml
index aa4d69550ec6b6cfc728e03970ffbc5b7b441741..db66a0edbd8f399469c2464e40cfd375a7c3c7ee 100644
--- a/app/views/projects/labels/index.html.haml
+++ b/app/views/projects/labels/index.html.haml
@@ -3,7 +3,7 @@
 - hide_class = ''
 = render "projects/issues/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area.adjust
     .nav-text
       Labels can be applied to issues and merge requests. Star a label to make it a priority label. Order the prioritized labels to change their relative priority, by dragging.
diff --git a/app/views/projects/merge_requests/index.html.haml b/app/views/projects/merge_requests/index.html.haml
index 9f948d41ddaf8a963d3b0388d60d9da9d4bf7a0a..ace275c689b8770e1ae420c6802ecfca86424a32 100644
--- a/app/views/projects/merge_requests/index.html.haml
+++ b/app/views/projects/merge_requests/index.html.haml
@@ -3,7 +3,7 @@
 = render "projects/issues/head"
 = render 'projects/last_push'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     = render 'shared/issuable/nav', type: :merge_requests
     .nav-controls
diff --git a/app/views/projects/milestones/index.html.haml b/app/views/projects/milestones/index.html.haml
index b0e0bdfff5ad60ca8d6eb8b7ee2e1dd00ae72321..ad2bfbec915d57387d843b5e38c398925faccbbf 100644
--- a/app/views/projects/milestones/index.html.haml
+++ b/app/views/projects/milestones/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Milestones"
 = render "projects/issues/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     = render 'shared/milestones_filter'
 
diff --git a/app/views/projects/network/_head.html.haml b/app/views/projects/network/_head.html.haml
index 86295a3d0110034cda2efe4602b1c5a7672b8b33..8f6805268d506b581c40001ea697a8a3042b94a9 100644
--- a/app/views/projects/network/_head.html.haml
+++ b/app/views/projects/network/_head.html.haml
@@ -1,6 +1,6 @@
 - @no_container = true
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .row-content-block.second-block.content-component-block
     .tree-ref-holder
       = render partial: 'shared/ref_switcher', locals: {destination: 'graph'}
diff --git a/app/views/projects/network/show.html.haml b/app/views/projects/network/show.html.haml
index 3ca30b4ba6b5cff8aab9bdd463ce409434d9921d..091af4df4a1fdec89a70598301a9c8166d40dc73 100644
--- a/app/views/projects/network/show.html.haml
+++ b/app/views/projects/network/show.html.haml
@@ -4,7 +4,7 @@
   = page_specific_javascript_tag('network/application.js')
 = render "projects/commits/head"
 = render "head"
-%div{ class: (container_class) }
+%div{ class: container_class }
   .project-network
     .controls
       = form_tag namespace_project_network_path(@project.namespace, @project, @id), method: :get, class: 'form-inline network-form' do |f|
diff --git a/app/views/projects/pipelines/index.html.haml b/app/views/projects/pipelines/index.html.haml
index b70693eeb62923d748691fe1b7398342ac623d7d..28b475d5c2f8aecb1cc5d2aa4ab5d453d5e05cd5 100644
--- a/app/views/projects/pipelines/index.html.haml
+++ b/app/views/projects/pipelines/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Pipelines"
 = render "projects/pipelines/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     %ul.nav-links
       %li{class: ('active' if @scope.nil?)}
diff --git a/app/views/projects/show.html.haml b/app/views/projects/show.html.haml
index 15f0d85194b899ee1da71875e0a30b31603891bd..f6e81af26386c8802af6170d8dd2a0286dc797b1 100644
--- a/app/views/projects/show.html.haml
+++ b/app/views/projects/show.html.haml
@@ -13,7 +13,7 @@
 = render "home_panel"
 
 .project-stats.row-content-block.second-block
-  %div{ class: (container_class) }
+  %div{ class: container_class }
     %ul.nav
       %li
         = link_to project_files_path(@project) do
diff --git a/app/views/projects/tags/index.html.haml b/app/views/projects/tags/index.html.haml
index 4ca1f58ac5c35cd116d57f8bbeed15611b275e7e..c375bb6dd1b37a09745e93d124677ea5c2bc7e15 100644
--- a/app/views/projects/tags/index.html.haml
+++ b/app/views/projects/tags/index.html.haml
@@ -2,7 +2,7 @@
 - page_title "Tags"
 = render "projects/commits/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     .nav-text
       Tags give the ability to mark specific points in history as being important
@@ -25,7 +25,7 @@
                 = sort_title_oldest_updated
 
   .tags
-    - unless @tags.empty?
+    - if @tags.any?
       %ul.content-list
         = render partial: 'tag', collection: @tags
 
diff --git a/app/views/projects/tree/show.html.haml b/app/views/projects/tree/show.html.haml
index 2abcfcdd7b27d0fe66f56b085674e9a8d2031041..bf5360b4deee9195834eca9859419a845d3ad686 100644
--- a/app/views/projects/tree/show.html.haml
+++ b/app/views/projects/tree/show.html.haml
@@ -7,7 +7,7 @@
 = render 'projects/last_push'
 = render "projects/commits/head"
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .tree-controls
     = render 'projects/find_file_link'
     - if can? current_user, :download_code, @project
diff --git a/app/views/projects/wikis/_new.html.haml b/app/views/projects/wikis/_new.html.haml
index 4f8abcdc8e1a167b7b9908d3e011941ee4317785..c32cb122c26fe33b8e4f263fff88275f7033fab2 100644
--- a/app/views/projects/wikis/_new.html.haml
+++ b/app/views/projects/wikis/_new.html.haml
@@ -1,6 +1,6 @@
 - @no_container = true
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   %div#modal-new-wiki.modal
     .modal-dialog
       .modal-content
diff --git a/app/views/projects/wikis/edit.html.haml b/app/views/projects/wikis/edit.html.haml
index 817bf9b3f69d898379d36084da08ceb00186b581..233538bb488cff19f8c1606c02ea9cb36c8dacfe 100644
--- a/app/views/projects/wikis/edit.html.haml
+++ b/app/views/projects/wikis/edit.html.haml
@@ -2,7 +2,7 @@
 - page_title "Edit", @page.title.capitalize, "Wiki"
 = render 'nav'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     .nav-text
       %strong
diff --git a/app/views/projects/wikis/git_access.html.haml b/app/views/projects/wikis/git_access.html.haml
index 6caf7230f350d6ee4c3f5f471947bf40e1ab1105..b8811a28dd66cce0c58e3d57a6be4423415e617d 100644
--- a/app/views/projects/wikis/git_access.html.haml
+++ b/app/views/projects/wikis/git_access.html.haml
@@ -2,7 +2,7 @@
 - page_title "Git Access", "Wiki"
 
 = render 'nav'
-%div{ class: (container_class) }
+%div{ class: container_class }
   .sub-header-block
     %span.oneline
       Git access for
diff --git a/app/views/projects/wikis/history.html.haml b/app/views/projects/wikis/history.html.haml
index 630ee35b70b9473104e764209db9a0f699ebee35..4c0b14e2c420e4bda836fc70760051077c6cf62a 100644
--- a/app/views/projects/wikis/history.html.haml
+++ b/app/views/projects/wikis/history.html.haml
@@ -1,6 +1,6 @@
 - page_title "History", @page.title.capitalize, "Wiki"
 = render 'nav'
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     .nav-text
       %strong
diff --git a/app/views/projects/wikis/pages.html.haml b/app/views/projects/wikis/pages.html.haml
index 81d9f391c1c50f435282afe30a2a3dec4f474416..9c10acd4cb6b6373ab937cd01f4277524f61a05e 100644
--- a/app/views/projects/wikis/pages.html.haml
+++ b/app/views/projects/wikis/pages.html.haml
@@ -3,7 +3,7 @@
 
 = render 'nav'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   %ul.content-list
     - @wiki_pages.each do |wiki_page|
       %li
diff --git a/app/views/projects/wikis/show.html.haml b/app/views/projects/wikis/show.html.haml
index 76f9b1ecd762b7ddda0e9a6e4735331491754af9..5cebb538cf563d51cf2fc97779a4eda0bc94b4f5 100644
--- a/app/views/projects/wikis/show.html.haml
+++ b/app/views/projects/wikis/show.html.haml
@@ -2,7 +2,7 @@
 - page_title @page.title.capitalize, "Wiki"
 = render 'nav'
 
-%div{ class: (container_class) }
+%div{ class: container_class }
   .top-area
     .nav-text
       %strong= @page.title.capitalize