diff --git a/components/ILIAS/User/src/UserGUIRequest.php b/components/ILIAS/User/src/UserGUIRequest.php
index 192d7046d41f..a16898942c52 100755
--- a/components/ILIAS/User/src/UserGUIRequest.php
+++ b/components/ILIAS/User/src/UserGUIRequest.php
@@ -139,7 +139,7 @@ public function getSelect(): array
 
     public function getDefaultSessionReminder(): ?string
     {
-        return $this->str('default_session_reminder') ?: (string) ilSessionReminder::LEAD_TIME_DISABLED;
+        return $this->str('default_session_reminder') ?: (string) \ilSessionReminder::LEAD_TIME_DISABLED;
     }
 
     public function getFiles(): array