diff --git a/lms/djangoapps/django_comment_client/middleware.py b/lms/djangoapps/django_comment_client/middleware.py
new file mode 100644
index 0000000000..08e20b0296
--- /dev/null
+++ b/lms/djangoapps/django_comment_client/middleware.py
@@ -0,0 +1,9 @@
+from comment_client import CommentClientError
+from django_comment_client.utils import JsonError
+import json
+
+class AjaxExceptionMiddleware(object): 
+    def process_exception(self, request, exception):
+        if isinstance(exception, CommentClientError) and request.is_ajax():
+            return JsonError(json.loads(exception.message))
+        return None