diff --git a/lib/gitlab/cycle_analytics/events.rb b/lib/gitlab/cycle_analytics/events.rb
index 42ef864c916be8f69e4fe2283680b7fe064a04f6..a16c15ed3a87a7f0ace7a1e6275c3e6cb8a78281 100644
--- a/lib/gitlab/cycle_analytics/events.rb
+++ b/lib/gitlab/cycle_analytics/events.rb
@@ -13,7 +13,7 @@ module Gitlab
 
       def issue_events
         # TODO figure out what the frontend needs for displaying the avatar
-        @fetcher.fetch_issue_events { |event| parse_event(event) }
+        @fetcher.fetch_issue_events.each { |event| parse_event(event) }
       end
 
       def plan_events
@@ -25,7 +25,7 @@ module Gitlab
       end
 
       def code_events
-        @fetcher.fetch_code_events { |event| parse_event(event) }
+        @fetcher.fetch_code_events.each { |event| parse_event(event) }
       end
 
       def test_events
@@ -39,13 +39,13 @@ module Gitlab
         @fetcher.fetch_review_events.each { |event| parse_event(event) }
       end
 
+      private
+
       def parse_event(event)
         event['total_time'] = distance_of_time_in_words(event['total_time'].to_f)
         event['created_at'] = interval_in_words(event['created_at'])
       end
 
-      private
-
       def first_time_reference_commit(commits, event)
         st_commit = YAML.load(commits).detect do |commit|
           commit['created_at'] == event['first_mentioned_in_commit_at']
diff --git a/lib/gitlab/database/date_time.rb b/lib/gitlab/database/date_time.rb
index 38a6fd4276b590a103131c2db8666970dc6397e1..25e569980386a6e9d9ead08be41baf591927f56d 100644
--- a/lib/gitlab/database/date_time.rb
+++ b/lib/gitlab/database/date_time.rb
@@ -8,7 +8,7 @@ module Gitlab
       # Note: For MySQL, the interval is returned in seconds.
       #       For PostgreSQL, the interval is returned as an INTERVAL type.
       def subtract_datetimes(query_so_far, start_time_attrs, end_time_attrs, as)
-        diff_fn = subtract_datetimes_diff(query_so_far, end_time_attrs, start_time_attrs)
+        diff_fn = subtract_datetimes_diff(query_so_far, start_time_attrs, end_time_attrs)
 
         query_so_far.project(diff_fn.as(as))
       end
diff --git a/spec/lib/gitlab/cycle_analytics/events_spec.rb b/spec/lib/gitlab/cycle_analytics/events_spec.rb
index ae1172cd653eff2cab74b63e4b13ef584fbe2aa5..17db46f0d4ae32567d14625d1c191dc25e1aea86 100644
--- a/spec/lib/gitlab/cycle_analytics/events_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/events_spec.rb
@@ -78,10 +78,12 @@ describe Gitlab::CycleAnalytics::Events do
   describe '#test_events' do
     let!(:context) { create(:issue, project: project, created_at: 2.days.ago) }
     let(:merge_request) { MergeRequest.first }
-    let!(:pipeline) { create(:ci_pipeline,
-                             ref: merge_request.source_branch,
-                             sha: merge_request.diff_head_sha,
-                             project: context.project) }
+    let!(:pipeline) do
+      create(:ci_pipeline,
+             ref: merge_request.source_branch,
+             sha: merge_request.diff_head_sha,
+             project: context.project)
+    end
 
     before do
       pipeline.run!
@@ -121,7 +123,6 @@ describe Gitlab::CycleAnalytics::Events do
     end
   end
 
-
   def setup(context)
     milestone = create(:milestone, project: project)
     context.update(milestone: milestone)