diff --git a/system/security.php b/system/security.php
index 9c31a79..e90a99e 100644
--- a/system/security.php
+++ b/system/security.php
@@ -642,11 +642,14 @@ if(!check_function_exists("check_redirect_origin")) {
 // since 1.6 or above
 if(!check_function_exists("start_isolated_session")) {
     function start_isolated_session() {
-        $cwd = get_current_working_dir();
-        $session_dir = $cwd . "/storage/sandbox/sessions";
-        session_save_path($session_dir);
-        @ini_set("session.save_path", $session_dir);
-        @ini_set("session.gc_probability", 1); // enable gc(gabage collection)
+        $config = get_config();
+        if(!array_key_equals("sandboxdisabled", $config, 1)) {
+            $cwd = get_current_working_dir();
+            $session_dir = $cwd . "/storage/sandbox/sessions";
+            session_save_path($session_dir);
+            @ini_set("session.save_path", $session_dir);
+            @ini_set("session.gc_probability", 1); // enable gc(gabage collection)
+        }
         session_start(); // enable $_SESSION
     }
 }