diff --git a/lms/static/coffee/src/open_ended/open_ended.coffee b/lms/static/coffee/src/open_ended/open_ended.coffee
index 47e78bcb06..cc8bad5473 100644
--- a/lms/static/coffee/src/open_ended/open_ended.coffee
+++ b/lms/static/coffee/src/open_ended/open_ended.coffee
@@ -51,7 +51,7 @@ class OpenEnded
     return @handle_after_action
 
   handle_after_action: (data) ->
-    if !response.success
+    if !data.success
       @gentle_alert data.error
 
   gentle_alert: (msg) =>