diff --git a/application/layouts/scripts/layout.phtml b/application/layouts/scripts/layout.phtml
index 44340da35..42dcc1ede 100644
--- a/application/layouts/scripts/layout.phtml
+++ b/application/layouts/scripts/layout.phtml
@@ -34,8 +34,9 @@ $innerLayoutScript = $this->layout()->innerLayout . '.phtml';
   <meta name="apple-mobile-web-app-title" content="Icinga">
   <link rel="mask-icon" href="<?= $this->baseUrl('img/website-icon.svg') ?>" color="#0096BF">
 <?php if ($isIframe): ?>
-  <base target="_parent"/>
+  <base target="_parent">
 <?php else: ?>
+  <base href="<?= $this->baseUrl(); ?>/">
   <script type="text/javascript">
   (function() {
     var html = document.getElementsByTagName('html')[0];