diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 15cf08f3da..7c1e177dbe 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -399,7 +399,7 @@
   //#define MKS_PWC                 // Using the MKS PWC add-on
   //#define PS_OFF_CONFIRM          // Confirm dialog when power off
   //#define PS_OFF_SOUND            // Beep 1s when power off
-  #define PSU_ACTIVE_STATE LOW      // Set 'LOW' for ATX, 'HIGH' for X-Box
+  #define PSU_ACTIVE_STATE HIGH      // Set 'LOW' for ATX, 'HIGH' for X-Box
 
   //#define PSU_DEFAULT_OFF             // Keep power off until enabled directly with M80
   //#define PSU_POWERUP_DELAY      250  // (ms) Delay for the PSU to warm up to full power