diff --git a/Marlin/src/inc/Conditionals_adv.h b/Marlin/src/inc/Conditionals_adv.h
index 49b6652587..7d3306ffb8 100644
--- a/Marlin/src/inc/Conditionals_adv.h
+++ b/Marlin/src/inc/Conditionals_adv.h
@@ -647,7 +647,7 @@
 #if ALL(HAS_RESUME_CONTINUE, PRINTER_EVENT_LEDS, SDSUPPORT)
   #define HAS_LEDS_OFF_FLAG 1
 #endif
-#ifdef DISPLAY_SLEEP_MINUTES || TOUCH_IDLE_SLEEP_MINS
+#if DISPLAY_SLEEP_MINUTES || TOUCH_IDLE_SLEEP_MINS
   #define HAS_DISPLAY_SLEEP 1
 #endif
 #if HAS_DISPLAY_SLEEP || LCD_BACKLIGHT_TIMEOUT_MINS