diff --git a/fet2020/authentications/backends.py b/fet2020/authentications/backends.py
index 24dd0d9f..936dc5ad 100644
--- a/fet2020/authentications/backends.py
+++ b/fet2020/authentications/backends.py
@@ -121,9 +121,9 @@ class LdapBackend(ModelBackend):
             return
 
         try:
-            user = User.objects.get(username)
+            user = User.objects.get(username=username)
         except User.DoesNotExist:
-            user = User.objects.create_user(username)
+            user = User.objects.create_user(username=username)
 
         if not self.user_can_authenticate(user):
             logger.info("User '%s' is inactive.", user.get_username())