diff --git a/account/serializers.py b/account/serializers.py
index b783efd..6356be5 100644
--- a/account/serializers.py
+++ b/account/serializers.py
@@ -373,17 +373,16 @@ class UpdateUserNotificationSerializer(serializers.ModelSerializer):
         fields = ['push_notification', 'email_notification', 'sms_notification']
 
     def create(self, validated_data):
-        instance = UserNotification.objects.filter(user=self.context).last()
-        if instance:
-            # change notification status
-            instance.push_notification = validated_data.get('push_notification',instance.push_notification)
-            instance.email_notification = validated_data.get('email_notification', instance.email_notification)
-            instance.sms_notification = validated_data.get('sms_notification', instance.sms_notification)
-            instance.save()
-        else:
-            instance = UserNotification.objects.create(user=self.context)
+        instance, _ = UserNotification.objects.update_or_create(
+                                             user=self.context,
+                                             defaults={
+                                                 'push_notification': validated_data.get('push_notification'),
+                                                 'email_notification': validated_data.get('email_notification'),
+                                                 'sms_notification': validated_data.get('sms_notification'),
+                                             })
         return instance
 
+
 class UserPhoneOtpSerializer(serializers.ModelSerializer):
     """User Phone serializers"""
     class Meta(object):