diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index f20d88569..a8f251164 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -293,7 +293,7 @@
     #ifdef _LCD_CONTRAST_MAX
       #define LCD_CONTRAST_MAX _LCD_CONTRAST_MAX
     #elif _LCD_CONTRAST_INIT > 63
-      #define LCD_CONTRAST_MAX _LCD_CONTRAST_INIT
+      #define LCD_CONTRAST_MAX 255
     #else
       #define LCD_CONTRAST_MAX 63   // ST7567 6-bits contrast
     #endif