diff --git a/selfdrive/thermald.py b/selfdrive/thermald.py
index 97eefc3f55..6db8b61bc1 100755
--- a/selfdrive/thermald.py
+++ b/selfdrive/thermald.py
@@ -71,7 +71,7 @@ _TEMP_THRS_H = [50., 65., 80., 10000]
 _TEMP_THRS_L = [42.5, 57.5, 72.5, 10000]
 # fan speed options
 _FAN_SPEEDS = [0, 16384, 32768, 65535]
-# max fan speed only allowed if battery if hot
+# max fan speed only allowed if battery is hot
 _BAT_TEMP_THERSHOLD = 45.
 
 def handle_fan(max_cpu_temp, bat_temp, fan_speed):