diff --git a/app/helpers/merge_requests_helper.rb b/app/helpers/merge_requests_helper.rb
index 81773e7afc..728d877ace 100644
--- a/app/helpers/merge_requests_helper.rb
+++ b/app/helpers/merge_requests_helper.rb
@@ -47,7 +47,7 @@ module MergeRequestsHelper
   end
 
   def issues_sentence(issues)
-    issues.map { |i| "##{i.iid}" }.to_sentence
+    issues.map(&:to_reference).to_sentence
   end
 
   def mr_change_branches_path(merge_request)