diff --git a/phpBB/styles/prosilver/template/simple_header.html b/phpBB/styles/prosilver/template/simple_header.html
index b5878517a3..70a7411d4d 100644
--- a/phpBB/styles/prosilver/template/simple_header.html
+++ b/phpBB/styles/prosilver/template/simple_header.html
@@ -31,7 +31,7 @@
 	<link href="{T_THEME_PATH}/bidi.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet">
 <!-- ENDIF -->
 
-<!--[if lte IE 8]>
+<!--[if lte IE 9]>
 	<link href="{T_THEME_PATH}/tweaks.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet">
 <![endif]-->