diff --git a/access/views.py b/access/views.py
index d84f83c..983316c 100644
--- a/access/views.py
+++ b/access/views.py
@@ -144,7 +144,7 @@ class DetailUserView(APIView):
             user.first_name = f_n
 
         if not l_n is None:
-            user.first_name = l_n
+            user.last_name = l_n
 
         user.save()