diff --git a/admin/code/LeftAndMain.php b/admin/code/LeftAndMain.php
index e0259b0cd..1688a8aef 100644
--- a/admin/code/LeftAndMain.php
+++ b/admin/code/LeftAndMain.php
@@ -317,8 +317,8 @@ class LeftAndMain extends Controller {
 		$title = $this->Title();
 		
 		$response = parent::handleRequest($request, $model);
-		$response->addHeader('X-Controller', $this->class);
-		$response->addHeader('X-Title', $title);
+		if(!$response->getHeader('X-Controller')) $response->addHeader('X-Controller', $this->class);
+		if(!$response->getHeader('X-Title')) $response->addHeader('X-Title', $title);
 		
 		return $response;
 	}