diff --git a/server/proj/audio/serializers.py b/server/proj/audio/serializers.py
index 50885eb..ab87909 100644
--- a/server/proj/audio/serializers.py
+++ b/server/proj/audio/serializers.py
@@ -20,7 +20,7 @@ class FavoriteSongSerializer(serializers.ModelSerializer):
 class OnlyFavoriteSongSerializer(serializers.ModelSerializer):
     class Meta:
         model = FavoriteSong    
-        fields = ('song')
+        fields = ('song', )
 
     def to_representation(self, instance):
         rep = super().to_representation(instance)