diff --git a/lib/ci/gitlab_ci_yaml_processor.rb b/lib/ci/gitlab_ci_yaml_processor.rb
index 9a681c65d4b..56ad2c77c7d 100644
--- a/lib/ci/gitlab_ci_yaml_processor.rb
+++ b/lib/ci/gitlab_ci_yaml_processor.rb
@@ -229,7 +229,7 @@ module Ci
     end
 
     def source_to_pattern(source)
-      if %w(api external web).include?(source)
+      if %w[api external web].include?(source)
         source
       else
         source&.pluralize