diff --git a/Marlin/src/Marlin.cpp b/Marlin/src/Marlin.cpp
index 976ae21da2..5db1348b1d 100644
--- a/Marlin/src/Marlin.cpp
+++ b/Marlin/src/Marlin.cpp
@@ -355,8 +355,6 @@ bool pin_is_protected(const int8_t pin) {
   return false;
 }
 
-#include "gcode/config/M201.h"
-
 #if 0 // Not used for Sprinter/grbl gen6
   #include "gcode/config/M202.h"
 #endif
diff --git a/Marlin/src/gcode/config/M201.h b/Marlin/src/gcode/config/M201.cpp
similarity index 94%
rename from Marlin/src/gcode/config/M201.h
rename to Marlin/src/gcode/config/M201.cpp
index 24743f6dfb..d6740499aa 100644
--- a/Marlin/src/gcode/config/M201.h
+++ b/Marlin/src/gcode/config/M201.cpp
@@ -20,12 +20,15 @@
  *
  */
 
+#include "../gcode.h"
+#include "../../module/planner.h"
+
 /**
  * M201: Set max acceleration in units/s^2 for print moves (M201 X1000 Y1000)
  *
  *       With multiple extruders use T to specify which one.
  */
-void gcode_M201() {
+void GcodeSuite::M201() {
 
   GET_TARGET_EXTRUDER();
 
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index c6fddf2580..b1c36da3d4 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -119,7 +119,6 @@ void GcodeSuite::dwell(millis_t time) {
 extern void gcode_M163();
 extern void gcode_M164();
 extern void gcode_M165();
-extern void gcode_M201();
 extern void gcode_M203();
 extern void gcode_M204();
 extern void gcode_M205();
@@ -530,9 +529,9 @@ void GcodeSuite::process_next_command() {
       case 200: // M200: Set filament diameter, E to cubic units
         M200();
         break;
-      case 201: // M201: Set max acceleration for print moves (units/s^2)
-        gcode_M201();
-        break;
+
+      case 201: M201(); break;  // M201: Set max acceleration for print moves (units/s^2)
+
       #if 0 // Not used for Sprinter/grbl gen6
         case 202: // M202
           gcode_M202();