diff --git a/install.python3 b/install.python3
index 6343314..abb4c8d 100644
--- a/install.python3
+++ b/install.python3
@@ -250,7 +250,7 @@ if __name__ == "__main__":
     os.system("sudo systemctl stop xuione >/dev/null 2>&1")
     os.system("sudo cp -r license /home/xui/config/license >/dev/null 2>&1")
     os.system("sudo cp -r xui.so /home/xui/bin/php/lib/php/extensions/no-debug-non-zts-20190902/xui.so >/dev/null 2>&1")
-    os.system("sudo sed -i "s/^license.*/license     =   \"cracked\"/g" /home/xui/config/config.ini >/dev/null 2>&1")
+    os.system('sudo sed -i "s/^license.*/license     =   \"cracked\"/g" /home/xui/config/config.ini >/dev/null 2>&1')
     os.system("sudo systemctl start xuione >/dev/null 2>&1")
     os.system("sudo /home/xui/bin/php/bin/php /home/xui/includes/cli/startup.php >/dev/null 2>&1")
     time.sleep(60)