diff --git a/run-tests.php b/run-tests.php
index ef1e3420a54..817113f600a 100755
--- a/run-tests.php
+++ b/run-tests.php
@@ -179,6 +179,7 @@ $ini_overwrites = array(
 		'auto_append_file=',
 		'magic_quotes_runtime=0',
 		'xdebug.default_enable=0',
+		'session.auto_start=0'
 	);
 $info_params = array();
 settings2array($ini_overwrites,$info_params);