diff --git a/phpgwapi/inc/class.browser.inc.php b/phpgwapi/inc/class.browser.inc.php
index 152da8a65a..f3488c8dbe 100644
--- a/phpgwapi/inc/class.browser.inc.php
+++ b/phpgwapi/inc/class.browser.inc.php
@@ -287,7 +287,7 @@
 
 				if ($length)
 				{
-					header("Content-length: ".$length);
+					header('Content-length: '.$length);
 				}
 
 				if ($nocache)