diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index ff9533b..87d615b 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -1841,7 +1841,7 @@
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not as annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
-//#define FAN_SOFT_PWM
+#define FAN_SOFT_PWM
 
 // Incrementing this by 1 will double the software PWM frequency,
 // affecting heaters, and the fan if FAN_SOFT_PWM is enabled.
@@ -1959,7 +1959,7 @@
 
 //CUSTOM EXTENSIONS
 
-//#define FAN_PIN 4
+#define FAN_PIN 4
 
 
 #endif // CONFIGURATION_H