diff --git a/config.php-dist b/config.php-dist
index 8baf4b76c..b61313183 100644
--- a/config.php-dist
+++ b/config.php-dist
@@ -107,7 +107,7 @@
 	define('SESSION_CHECK_ADDRESS', true);
 	// Bind sessions to specific IP address (requires DATABASE_BACKED_SESSIONS)
 
-	define('SESSION_COOKIE_LIFETIME', 3600);
+	define('SESSION_COOKIE_LIFETIME', 0);
 	// In seconds, 0 means delete on browser close
 
 	// vim:ft=php