diff --git a/lib/api/merge_requests.rb b/lib/api/merge_requests.rb
index afe85623c0f..172c8504d0f 100644
--- a/lib/api/merge_requests.rb
+++ b/lib/api/merge_requests.rb
@@ -26,7 +26,7 @@ module API
       #   GET /projects/:id/merge_requests?state=opened
       #   GET /projects/:id/merge_requests?state=closed
       #   GET /projects/:id/merge_requests?order_by=created_at
-      #   GET /projects/:id/merge_requests?order_by=created_at
+      #   GET /projects/:id/merge_requests?order_by=updated_at
       #   GET /projects/:id/merge_requests?sort=desc
       #   GET /projects/:id/merge_requests?sort=asc
       #