diff --git a/test/ui5lab/striptoastr/sample/StripToastrPlayground.html b/test/ui5lab/striptoastr/sample/StripToastrPlayground.html
index 2c8b510..4e0961d 100644
--- a/test/ui5lab/striptoastr/sample/StripToastrPlayground.html
+++ b/test/ui5lab/striptoastr/sample/StripToastrPlayground.html
@@ -2,6 +2,7 @@
 <html>
 
 <head>
+    <base href="../../../../">
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <meta charset="UTF-8">
     <title>StripToastr Test PlayGround</title>
