diff --git a/server/apps/supervision/serializers.py b/server/apps/supervision/serializers.py
index 26ca182..85d4f8a 100644
--- a/server/apps/supervision/serializers.py
+++ b/server/apps/supervision/serializers.py
@@ -199,7 +199,7 @@ class ComplaintSerializer(ValidateMixin, serializers.ModelSerializer):
         model = Complaint
 
 class PtSerializer(ValidateMixin, serializers.ModelSerializer):
-
+    belong_dept_name = serializers.CharField(source='task2do.belong_dept.name', read_only=True)
     class Meta(BaseMeta):
         model = Pt