diff --git a/printer_data/config/SYSTEM/heater_cooling.cfg b/printer_data/config/SYSTEM/heater_cooling.cfg
index 3b07a47..5a7104b 100644
--- a/printer_data/config/SYSTEM/heater_cooling.cfg
+++ b/printer_data/config/SYSTEM/heater_cooling.cfg
@@ -22,7 +22,7 @@ max_temp: 125
 
 [fan]
 ##	Part Cooling Fan - CPAP 7040
-pin: PB7
+pin: ^PB7
 max_power: 1.0
 hardware_pwm: False
 cycle_time: 0.0002