diff --git a/content/Tempus.pdf b/content/Tempus.pdf
deleted file mode 100644
index 3cdd18de2..000000000
Binary files a/content/Tempus.pdf and /dev/null differ
diff --git a/content/tempus.js.php b/content/tempus.js.php
index eb948c830..28b323be3 100644
--- a/content/tempus.js.php
+++ b/content/tempus.js.php
@@ -473,7 +473,7 @@ function SyncLVPlan()
 // ****
 function OpenManualTempus()
 {
-	window.open('<?php echo APP_ROOT ?>content/Tempus.pdf','Manual');
+	window.open('https://fhcomplete.technikum-wien.at/dokuwiki/doku.php?id=tempus:allgemeines','Manual');
 }
 
 // ****