diff --git a/test/documentation/version.js b/test/documentation/version.js
index d1fb37dc..0ab52f2e 100644
--- a/test/documentation/version.js
+++ b/test/documentation/version.js
@@ -1,7 +1,7 @@
-// SPDX-FileCopyrightText: 2006-2024 Knut Reinert & Freie Universität Berlin
-// SPDX-FileCopyrightText: 2016-2024 Knut Reinert & MPI für molekulare Genetik
-// SPDX-License-Identifier: BSD-3-Clause
-
+/*  SPDX-FileCopyrightText: 2006-2024 Knut Reinert & Freie Universität Berlin
+    SPDX-FileCopyrightText: 2016-2024 Knut Reinert & MPI für molekulare Genetik
+    SPDX-License-Identifier: BSD-3-Clause
+*/
 /* Jongkyu Kim (j.kim@fu-berlin.de), 2016.01.12
    Adaptations by Enrico Seiler (enrico.seiler@fu-berlin.de), 2020 */
 
@@ -47,7 +47,7 @@ function addVersionSelection(arr)
     version_select.addEventListener("change", function(){changeVersion(this.id);}, false);
 
     // current selection is..
-    cur_sel = window.location.pathname.split("/")[2];
+    cur_sel = window.location.pathname.split("/").at(-2);
 
     for(i=0; i < arr.length; ++i)
     {
diff --git a/test/documentation/version.php b/test/documentation/version.php
index a5a2f489..ca6dda16 100644
--- a/test/documentation/version.php
+++ b/test/documentation/version.php
@@ -1,9 +1,9 @@
 <?php
-
-// SPDX-FileCopyrightText: 2006-2024 Knut Reinert & Freie Universität Berlin
-// SPDX-FileCopyrightText: 2016-2024 Knut Reinert & MPI für molekulare Genetik
-// SPDX-License-Identifier: BSD-3-Clause
-
+/*
+    SPDX-FileCopyrightText: 2006-2024 Knut Reinert & Freie Universität Berlin
+    SPDX-FileCopyrightText: 2016-2024 Knut Reinert & MPI für molekulare Genetik
+    SPDX-License-Identifier: BSD-3-Clause
+*/
 /* Jongkyu Kim(j.kim@fu-berlin.de), 2016.01.12
    Adaptations by Enrico Seiler (enrico.seiler@fu-berlin.de), 2020 */
 $LOCALDIR = "../";
@@ -12,6 +12,10 @@
 $list = array();
 foreach( $files as $file  )
 {
+    if( !is_dir("$LOCALDIR/$file") ) // Skip files
+        continue;
+    if( strpos($file, "hidden_") !== FALSE ) // Skip directories starting with "hidden_"
+        continue;
     if( $file[0] == "." ) // Skip current directory
         continue;