diff --git a/selfdrive/car/hyundai/carstate.py b/selfdrive/car/hyundai/carstate.py
index 213242b..285490d 100644
--- a/selfdrive/car/hyundai/carstate.py
+++ b/selfdrive/car/hyundai/carstate.py
@@ -1,6 +1,7 @@
 from collections import deque
 import copy
 import math
+import sys
 
 from cereal import car
 from openpilot.common.conversions import Conversions as CV