diff --git a/index.php b/index.php
index bd8e9447b8..343892822e 100755
--- a/index.php
+++ b/index.php
@@ -74,7 +74,7 @@
 		$g_response = $resp = $app->getResponse();
 
 		// Prevent caching
-		$resp->addHeader("Cache-Control", "no-cache, must-revalidate");
+		$resp->addHeader("Cache-Control", "no-cache, no-store, must-revalidate");
 		$resp->addHeader("Expires", "Mon, 26 Jul 1997 05:00:00 GMT");
 		
 		// Security headers