diff --git a/auth.php b/auth.php
index 96a4d85..39c6bbd 100644
--- a/auth.php
+++ b/auth.php
@@ -139,12 +139,11 @@ public function registerOAuthUser(&$userinfo, $servicename)
         $groups_on_creation[] = $this->cleanGroup($servicename); // add service as group
         $userinfo['grps'] = array_merge((array)$userinfo['grps'], $groups_on_creation);
 
-        // the password set here will remain unknown to the user
         $ok = $this->triggerUserMod(
             'create',
             [
                 $user,
-                auth_pwgen($user),
+                null,
                 $userinfo['name'],
                 $userinfo['mail'],
                 $userinfo['grps'],