diff --git a/adminer/include/bootstrap.inc.php b/adminer/include/bootstrap.inc.php
index bbf9b90f..efec0463 100644
--- a/adminer/include/bootstrap.inc.php
+++ b/adminer/include/bootstrap.inc.php
@@ -27,7 +27,7 @@ if (!isset($_SERVER["REQUEST_URI"])) {
 $HTTPS = $_SERVER["HTTPS"] && strcasecmp($_SERVER["HTTPS"], "off");
 
 @ini_set("session.use_trans_sid", false); // protect links in export, @ - may be disabled
-if (!ini_bool("session.auto_start")) {
+if (!defined("SID")) {
 	session_name("adminer_sid"); // use specific session name to get own namespace
 	$params = array(0, preg_replace('~\\?.*~', '', $_SERVER["REQUEST_URI"]), "", $HTTPS);
 	if (version_compare(PHP_VERSION, '5.2.0') >= 0) {