diff --git a/Marlin/src/core/serial.h b/Marlin/src/core/serial.h
index 92bc1a6333..37565352a9 100644
--- a/Marlin/src/core/serial.h
+++ b/Marlin/src/core/serial.h
@@ -21,13 +21,8 @@
  */
 #pragma once
 
-//#include <stdint.h>
-
-//#include "../inc/MarlinConfigPre.h"
 #include "../HAL/HAL.h"
 
-// #include "../core/macros.h"
-
 /**
  * Define debug bit-masks
  */