diff --git a/app/presenters/commit_status_presenter.rb b/app/presenters/commit_status_presenter.rb
index a08f34e2335c63a8e4ef2536aefe6fc9d951a901..65e77ea3f92e5e2801fb45583a747bf297f208de 100644
--- a/app/presenters/commit_status_presenter.rb
+++ b/app/presenters/commit_status_presenter.rb
@@ -11,10 +11,16 @@ class CommitStatusPresenter < Gitlab::View::Presenter::Delegated
     runner_unsupported: 'Your runner is outdated, please upgrade your runner'
   }.freeze
 
+  private_constant :CALLOUT_FAILURE_MESSAGES
+
   presents :build
 
+  def self.callout_failure_messages
+    CALLOUT_FAILURE_MESSAGES
+  end
+
   def callout_failure_message
-    CALLOUT_FAILURE_MESSAGES.fetch(failure_reason.to_sym)
+    self.class.callout_failure_messages.fetch(failure_reason.to_sym)
   end
 
   def recoverable?
diff --git a/lib/gitlab/ci/status/build/failed.rb b/lib/gitlab/ci/status/build/failed.rb
index 508b481463107a7debcf1e3ddacfc7d976c153e5..2fa9a0d454192655666f067ecfbb57f06fc4511f 100644
--- a/lib/gitlab/ci/status/build/failed.rb
+++ b/lib/gitlab/ci/status/build/failed.rb
@@ -13,6 +13,8 @@ module Gitlab
             runner_unsupported: 'unsupported runner'
           }.freeze
 
+          private_constant :REASONS
+
           def status_tooltip
             base_message
           end
@@ -25,6 +27,10 @@ module Gitlab
             build.failed?
           end
 
+          def self.reasons
+            REASONS
+          end
+
           private
 
           def base_message
@@ -36,7 +42,7 @@ module Gitlab
           end
 
           def failure_reason_message
-            REASONS.fetch(subject.failure_reason.to_sym)
+            self.class.reasons.fetch(subject.failure_reason.to_sym)
           end
         end
       end