diff --git a/selfdrive/thermald/thermald.py b/selfdrive/thermald/thermald.py
index b909d1198c..6cf5c428a8 100755
--- a/selfdrive/thermald/thermald.py
+++ b/selfdrive/thermald/thermald.py
@@ -220,7 +220,7 @@ def thermald_thread(end_event, hw_queue):
         if TICI:
           fan_controller = TiciFanController()
 
-    elif (sec_since_boot() - sm.rcv_time['pandaStates']/1e9) > DISCONNECT_TIMEOUT:
+    elif (sec_since_boot() - sm.rcv_time['pandaStates']) > DISCONNECT_TIMEOUT:
       if onroad_conditions["ignition"]:
         onroad_conditions["ignition"] = False
         cloudlog.error("panda timed out onroad")