diff --git a/public/sternenhimmel.php b/public/sternenhimmel.php
index 03c4954..4defa19 100644
--- a/public/sternenhimmel.php
+++ b/public/sternenhimmel.php
@@ -252,7 +252,7 @@ if (!$availableLocations) {
     ];
 }
 ?>
-<script src="/js/astronomy.browser.min.js"></script>
+<script src="<?= htmlspecialchars($publicBasePath . 'js/astronomy.browser.min.js', ENT_QUOTES, 'UTF-8') ?>"></script>
 
 <main>
 <div class="container">