diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 6c2cd1e88..b12a68364 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -443,7 +443,7 @@
  * Hotend Idle Timeout
  * Prevent filament in the nozzle from charring and causing a critical jam.
  */
-//#define HOTEND_IDLE_TIMEOUT
+#define HOTEND_IDLE_TIMEOUT
 #if ENABLED(HOTEND_IDLE_TIMEOUT)
   #define HOTEND_IDLE_TIMEOUT_SEC (15*60)    // (seconds) Time without extruder movement to trigger protection
   #define HOTEND_IDLE_MIN_TRIGGER   150     // (°C) Minimum temperature to enable hotend protection