diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index 95aed8f9..509d47a9 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -572,7 +572,7 @@ class HandoverSerializer(CustomModelSerializer):
     material_name = serializers.StringRelatedField(
         source='material', read_only=True)
     wm_notok_sign = serializers.CharField(source='wm.notok_sign', read_only=True)
-    handoverb = HandoverbSerializer(many=True, read_only=True)
+    handoverb = HandoverbSerializer(many=True)
     
     def validate(self, attrs):
         if 'type' not in attrs: