diff --git a/upload/source/class/optimizer/optimizer_thread.php b/upload/source/class/optimizer/optimizer_thread.php
index 433c7132500bed4fefe9ec506dfc53ee6662ba40..a7138d328af84884e0a803d2a0b77e3a60dd7c45 100644
--- a/upload/source/class/optimizer/optimizer_thread.php
+++ b/upload/source/class/optimizer/optimizer_thread.php
@@ -30,7 +30,7 @@ class optimizer_thread {
 
 	public function optimizer() {
 		$adminfile = defined(ADMINSCRIPT) ? ADMINSCRIPT : 'admin.php';
-		dheader('Location: '.$_G['siteurl'].$adminfile.'?action=postsplit&operation=manage');
+		dheader('Location: '.$_G['siteurl'].$adminfile.'?action=threadsplit&operation=manage');
 	}
 }