diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index 43ed3fabf..acf8f3620 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -2302,7 +2302,6 @@
 
 #if FAN_COUNT > 0
   #define HAS_FAN 1
-  #define WRITE_FAN(n, v) WRITE(FAN##n##_PIN, (v) ^ FAN_INVERTING)
 #endif
 
 /**
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index 924d796bf..85222a346 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -2536,6 +2536,8 @@ void Temperature::tick() {
     static SoftPWM soft_pwm_chamber;
   #endif
 
+  #define WRITE_FAN(n, v) WRITE(FAN##n##_PIN, (v) ^ FAN_INVERTING)
+
   #if DISABLED(SLOW_PWM_HEATERS)
 
     #if ANY(HAS_HOTEND, HAS_HEATED_BED, HAS_HEATED_CHAMBER, FAN_SOFT_PWM)