diff --git a/CHANGELOG b/CHANGELOG
index 2270341bcfbba892e8bd1997ca5351aefffb7dcf..d79b1f7a8fcd85a4fa1aa6c5b151cbd8b2d40ef1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,7 +4,7 @@ v 6.4.0
   - Fixed another 500 error with submodules
   - UI: More compact issues page
   - Minimal password length increased to 8 symbols
-  - Parallel diff view (Steven Thonus)
+  - Side-by-side diff view (Steven Thonus)
 
 v 6.3.0
   - API for adding gitlab-ci service
diff --git a/app/views/projects/commits/_diffs.html.haml b/app/views/projects/commits/_diffs.html.haml
index aec7f15cdb79e19436a66a33ca4ed475eac3a389..2a32f56e8f0d9b216600d8053e99ec8bd139c2c5 100644
--- a/app/views/projects/commits/_diffs.html.haml
+++ b/app/views/projects/commits/_diffs.html.haml
@@ -31,9 +31,9 @@
       and
       %strong.cred #{@commit.stats.deletions} deletions
   - if params[:view] == 'parallel'
-    = link_to "Unified Diff", url_for(view: 'unified'), {id: "commit-diff-viewtype", class: 'btn btn-tiny pull-right'}
+    = link_to "Inline Diff", url_for(view: 'inline'), {id: "commit-diff-viewtype", class: 'btn btn-tiny pull-right'}
   - else
-    = link_to "Parallel Diff", url_for(view: 'parallel'), {id: "commit-diff-viewtype", class: 'btn btn-tiny pull-right'}
+    = link_to "Side-by-side Diff", url_for(view: 'parallel'), {id: "commit-diff-viewtype", class: 'btn btn-tiny pull-right'}
 .file-stats
   = render "projects/commits/diff_head", diffs: diffs
 
diff --git a/app/views/projects/commits/_parallel_view.html.haml b/app/views/projects/commits/_parallel_view.html.haml
index 6585bd140a12204419d19d089ac95e087c2c37ac..3234e9da0ac88fa923ee22fb156ea49cdc5e56db 100644
--- a/app/views/projects/commits/_parallel_view.html.haml
+++ b/app/views/projects/commits/_parallel_view.html.haml
@@ -1,4 +1,4 @@
-/ Parallel diff view
+/ Side-by-side diff view
 - old_file = get_old_file(project, @commit, diff)
 - deleted_lines = {}
 - added_lines = {}
diff --git a/features/project/commits/commits.feature b/features/project/commits/commits.feature
index 97113871a0a4335f02b5c9cb3f026df2249b3311..cbe8b3215071c62cf55c49f1c4885db2fdb47fc8 100644
--- a/features/project/commits/commits.feature
+++ b/features/project/commits/commits.feature
@@ -14,12 +14,12 @@ Feature: Project Browse commits
   Scenario: I browse commit from list
     Given I click on commit link
     Then I see commit info
-    And I see parallel diff button
+    And I see side-by-side diff button
 
-  Scenario: I browse commit with parallel diff view
+  Scenario: I browse commit with side-by-side diff view
     Given I click on commit link
-    And I click parallel diff button
-    Then I see unified diff button
+    And I click side-by-side diff button
+    Then I see inline diff button
 
   Scenario: I compare refs
     Given I visit compare refs page
diff --git a/features/steps/project/project_browse_commits.rb b/features/steps/project/project_browse_commits.rb
index 17c51dc9a96c67be47e29c1c004f75bb6f4c4bc3..0376c8926964f2ebfe448e50735e4ae3fbd6af33 100644
--- a/features/steps/project/project_browse_commits.rb
+++ b/features/steps/project/project_browse_commits.rb
@@ -89,16 +89,16 @@ class ProjectBrowseCommits < Spinach::FeatureSteps
     links[1]['href'].should =~ %r{blob/cc1ba255d6c5ffdce87a357ba7ccc397a4f4026b}
   end
 
-  Given 'I click parallel diff button' do
-    click_link "Parallel Diff"
+  Given 'I click side-by-side diff button' do
+    click_link "side-by-side Diff"
   end
 
-  Then 'I see parallel diff button' do
-    page.should have_content "Parallel Diff"
+  Then 'I see side-by-side diff button' do
+    page.should have_content "Side-by-side Diff"
   end
 
-  Then 'I see unified diff button' do
-    page.should have_content "Unified Diff"
+  Then 'I see inline diff button' do
+    page.should have_content "Inline Diff"
   end
 
 end
diff --git a/vendor/assets/javascripts/ace-src-noconflict/mode-diff.js b/vendor/assets/javascripts/ace-src-noconflict/mode-diff.js
index 75e26cc7056752f3cb5f37813a44fcca7a10a413..8d1e7cee0967542ba1804c8a90fbbd8f096ae4e3 100644
--- a/vendor/assets/javascripts/ace-src-noconflict/mode-diff.js
+++ b/vendor/assets/javascripts/ace-src-noconflict/mode-diff.js
@@ -66,7 +66,7 @@ var DiffHighlightRules = function() {
                 "regex": "^(?:\\*{15}|={67}|-{3}|\\+{3})$",
                 "token": "punctuation.definition.separator.diff",
                 "name": "keyword"
-            }, { //diff.range.unified
+            }, { //diff.range.inline
                 "regex": "^(@@)(\\s*.+?\\s*)(@@)(.*)$",
                 "token": [
                     "constant",