diff --git a/config/generic-duet2.cfg b/config/generic-duet2.cfg
index 39603417..9a290e5f 100644
--- a/config/generic-duet2.cfg
+++ b/config/generic-duet2.cfg
@@ -183,7 +183,7 @@ enable_pin: !PC6
 step_distance: .002
 nozzle_diameter: 0.400
 filament_diameter: 1.750
-heater_pin: PA20
+heater_pin: !PA20
 sensor_type: EPCOS 100K B57560G104F
 sensor_pin: PC15
 control: pid
@@ -208,7 +208,7 @@ enable_pin: !PC6
 step_distance: .002
 nozzle_diameter: 0.400
 filament_diameter: 1.750
-heater_pin: PA16
+heater_pin: !PA16
 sensor_type: EPCOS 100K B57560G104F
 sensor_pin: PC12
 control: pid
@@ -233,7 +233,7 @@ enable_pin: !PC6
 step_distance: .002
 nozzle_diameter: 0.400
 filament_diameter: 1.750
-heater_pin: PC3
+heater_pin: !PC3
 sensor_type: EPCOS 100K B57560G104F
 sensor_pin: PC29
 control: pid
@@ -258,7 +258,7 @@ enable_pin: !PC6
 step_distance: .002
 nozzle_diameter: 0.400
 filament_diameter: 1.750
-heater_pin: PC5
+heater_pin: !PC5
 sensor_type: EPCOS 100K B57560G104F
 sensor_pin: PC30
 control: pid
@@ -276,7 +276,7 @@ interpolate: True
 run_current: 1.000
 
 [heater_bed]
-heater_pin: PA19
+heater_pin: !PA19
 sensor_type: EPCOS 100K B57560G104F
 sensor_pin: PC13
 control: watermark
@@ -327,32 +327,32 @@ max_z_accel: 100
 pins: !PC2
 
 [output_pin FAN3]
-pin: !sx1509_duex:PIN_12
+pin: sx1509_duex:PIN_12
 pwm: True
 hardware_pwm: True # Only hardware PWM fans are supported
 
 [output_pin FAN4]
-pin: !sx1509_duex:PIN_7
+pin: sx1509_duex:PIN_7
 pwm: True
 hardware_pwm: True
 
 [output_pin FAN5]
-pin: !sx1509_duex:PIN_6
+pin: sx1509_duex:PIN_6
 pwm: True
 hardware_pwm: True
 
 [output_pin FAN6]
-pin: !sx1509_duex:PIN_5
+pin: sx1509_duex:PIN_5
 pwm: True
 hardware_pwm: True
 
 [output_pin FAN7]
-pin: !sx1509_duex:PIN_4
+pin: sx1509_duex:PIN_4
 pwm: True
 hardware_pwm: True
 
 [output_pin FAN8]
-pin: !sx1509_duex:PIN_15
+pin: sx1509_duex:PIN_15
 pwm: True
 hardware_pwm: True