diff --git a/main.py b/main.py
index cb1a5ac..631ff48 100644
--- a/main.py
+++ b/main.py
@@ -984,7 +984,7 @@ async def get_aggregate(batch_id: int | None = Query(None)):
                     'performer': prog['performer'],
                     'category': prog['category'],
                     'avg_score': round(stat['avg_score'], 3)
-                    if stat.get('avg_score')
+                    if stat['avg_score'] is not None
                     else None,
                     'max_score': stat['max_score'],
                     'min_score': stat['min_score'],