diff --git a/backend/sublet/serializers.py b/backend/sublet/serializers.py
index 72b9ad0f..4b5c9b35 100644
--- a/backend/sublet/serializers.py
+++ b/backend/sublet/serializers.py
@@ -75,8 +75,8 @@ def validate_publish(self, validated_data, instance=None):
         newest_fields = [
             (field, validated_data[field])
             if field in validated_data
-            else (field, getattr(instance, field))
-            if instance and hasattr(instance, field)
+            else (field, getattr(instance, field, None))
+            if instance
             else (field, None)
             for field in fields
         ]