diff --git a/resources/templates/header.php b/resources/templates/header.php
index 4fce1044..24c1c2a4 100644
--- a/resources/templates/header.php
+++ b/resources/templates/header.php
@@ -15,7 +15,7 @@
     // header also needs to handle POST data. So this header does the PRG redirect
     // for all pages.
     unset($_POST); // unset ensures that header must not come before POST handling
-    UnitySite::redirect($_SERVER['REQUEST_URI']);
+    UnitySite::redirect($CONFIG["site"]["prefix"] . $_SERVER['REQUEST_URI']);
 }
 
 if (isset($SSO)) {