diff --git a/plugins/Authorization/AuthorizationPlugin.php b/plugins/Authorization/AuthorizationPlugin.php
index 6f21c93109..e4e046d088 100644
--- a/plugins/Authorization/AuthorizationPlugin.php
+++ b/plugins/Authorization/AuthorizationPlugin.php
@@ -88,7 +88,7 @@ abstract class AuthorizationPlugin extends Plugin
     }
 
     function onStartSetApiUser(&$user) {
-        return onStartSetUser(&$user);
+        return $this->onStartSetUser(&$user);
     }
 
     function onStartHasRole($profile, $name, &$has_role) {