diff --git a/ecrire/public/assembler.php b/ecrire/public/assembler.php
index b585863fb706c26f60cc5a81533269b685b604a9..66587b42a4faff1e4a9adb68041727bbf726595a 100644
--- a/ecrire/public/assembler.php
+++ b/ecrire/public/assembler.php
@@ -102,8 +102,8 @@ function assembler_page ($fond) {
 	AND !$var_mode
 	AND $chemin_cache
 	AND isset($page['entetes'])
-	AND strstr('max-age=', $page['entetes']['Cache-Control'])
-	AND !strstr('IIS/', $_SERVER['SERVER_SOFTWARE'])
+	AND strstr($page['entetes']['Cache-Control'],'max-age=')
+	AND !strstr($_SERVER['SERVER_SOFTWARE'],'IIS/')
 	) {
 		$since = preg_replace('/;.*/', '',
 			$_SERVER['HTTP_IF_MODIFIED_SINCE']);