1 files changed, 5 insertions, 1 deletions
diff --git a/lib/plugins/acl/admin.php b/lib/plugins/acl/admin.php
index e15d8aa9a..1e44b1ee5 100644
--- a/lib/plugins/acl/admin.php
+++ b/lib/plugins/acl/admin.php
@@ -348,7 +348,11 @@ class admin_plugin_acl extends DokuWiki_Admin_Plugin {
         }else{
             $user = auth_nameencode($who);
             $info = $auth->getUserData($user);
-            $groups = $info['groups'];
+            if($info === false){
+                $groups = array();
+            }else{
+                $groups = $info['groups'];
+            }
         }
 
         // check the permissions