diff --git a/resolvers/stat.py b/resolvers/stat.py
index 95115a66..421fd58b 100644
--- a/resolvers/stat.py
+++ b/resolvers/stat.py
@@ -54,7 +54,7 @@ def add_topic_stat_columns(q):
         func.coalesce(func.sum(sub_comments.c.comments_count), 0).label('comments_stat')
     )
 
-    q = q.group_by(Topic.id, sub_comments.c.comments_stat)
+    q = q.group_by(Topic.id)
 
     return q