diff --git a/stude/student_status/serializers.py b/stude/student_status/serializers.py
index 6c1346c..c7c68b5 100644
--- a/stude/student_status/serializers.py
+++ b/stude/student_status/serializers.py
@@ -39,7 +39,7 @@ class StudentStatusSerializer(serializers.ModelSerializer):
             validated_data['location'] = Point(0, 0)
             validated_data['subject'] = None
             validated_data['landmark'] = None
-            validated_data['study_group'] = []
+            validated_data['study_group'] = None
         else:
             if 'subject' not in validated_data:
                 raise serializers.ValidationError(