diff --git a/server/vbv_lernwelt/assignment/graphql/types.py b/server/vbv_lernwelt/assignment/graphql/types.py
index b66614a9..33687377 100644
--- a/server/vbv_lernwelt/assignment/graphql/types.py
+++ b/server/vbv_lernwelt/assignment/graphql/types.py
@@ -36,7 +36,7 @@ class AssignmentCompletionObjectType(DjangoObjectType):
             "evaluation_points",
             "evaluation_passed",
             "evaluation_max_points",
-            "task_completion_data"
+            "task_completion_data",
         )