diff --git a/apps/authentication/api/v1/serializers/serializer.py b/apps/authentication/api/v1/serializers/serializer.py
index c08d485..10dda60 100644
--- a/apps/authentication/api/v1/serializers/serializer.py
+++ b/apps/authentication/api/v1/serializers/serializer.py
@@ -133,7 +133,7 @@ class UserSerializer(serializers.ModelSerializer):
     def update(self, instance, validated_data):
         """ update user instance """
         instance.username = validated_data.get('username', instance.username)
-        if not validated_data.get('password'):
+        if validated_data.get('password'):
             instance.password = validated_data.get('password', instance.password)
         instance.first_name = validated_data.get('first_name')
         instance.last_name = validated_data.get('last_name')