diff --git a/py-scripts/sandbox/lf_check_ap.py b/py-scripts/sandbox/lf_check_ap.py
index 1b75fac9..bfbc5753 100755
--- a/py-scripts/sandbox/lf_check_ap.py
+++ b/py-scripts/sandbox/lf_check_ap.py
@@ -30,6 +30,7 @@ from time import sleep
 import argparse
 import pexpect
 import serial
+from serial import Serial
 from pexpect_serial import SerialSpawn
 import json
 from json import load