diff --git a/PV_Visu/module.php b/PV_Visu/module.php
index 6a4d09c..812eace 100644
--- a/PV_Visu/module.php
+++ b/PV_Visu/module.php
@@ -76,7 +76,7 @@ class PV_Visu extends IPSModule
         if ($Ident === 'update') {
             $this->UpdateData();
         } else {
-            throw new UnexpectedValueException("Unknown Ident $Ident");
+            throw new \UnexpectedValueException("Unknown Ident $Ident");
         }
     }