diff --git a/app/helpers/comments_helper.rb b/app/helpers/comments_helper.rb
index 6bfdd3f70..329f70ee4 100644
--- a/app/helpers/comments_helper.rb
+++ b/app/helpers/comments_helper.rb
@@ -12,7 +12,7 @@ module CommentsHelper
   def project_commentable_path(project, commentable)
     case
     when Comment.issue_comment?(commentable.class)
-      polymorphic_path [project, commentable]
+      polymorphic_path [project, commentable.pull_request ? commentable.pull_request : commentable]
     when Comment.commit_comment?(commentable.class)
       commit_path project, commentable.id
     end