diff --git a/server/apps/supervision/serializers.py b/server/apps/supervision/serializers.py
index 44e5e11..87f3319 100644
--- a/server/apps/supervision/serializers.py
+++ b/server/apps/supervision/serializers.py
@@ -145,7 +145,7 @@ class BaseMeta:
     
 class PgoalDeptSerializer(serializers.ModelSerializer):
     goal_file_ = FileSimpleSerializer(source='goal_file', read_only=True)
-    goal_files = FileSimpleSerializer(source='goal_files', many=True, read_only=True)
+    goal_files_ = FileSimpleSerializer(source='goal_files', many=True, read_only=True)
     class Meta(BaseMeta):
         model = PgoalDept
         read_only_fields = BaseMeta.read_only_fields + ['goal_value_a', 'goal_value_c', 'goal_files', 'goal_key', 'goal_file_', 'goal_files_']