diff --git a/Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.h b/Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.h
index 177a053088..2f6ce39ec7 100644
--- a/Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.h
+++ b/Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.h
@@ -60,7 +60,10 @@
  * See the end of this file for details on the hardware/firmware interaction
  */
 
-#include "fastio.h"
+#ifndef _LPC1768_PWM_H_
+#define _LPC1768_PWM_H_
+
+#include "pinmapping.h"
 
 #define LPC_PWM1_MR0 19999  // base repetition rate minus one count - 20mS
 #define LPC_PWM1_PR 24      // prescaler value - prescaler divide by 24 + 1  -  1 MHz output
@@ -73,3 +76,5 @@ bool LPC1768_PWM_attach_pin(pin_t pin, uint32_t min=1, uint32_t max=(LPC_PWM1_MR
 bool LPC1768_PWM_write(pin_t pin, uint32_t value);
 bool LPC1768_PWM_detach_pin(pin_t pin);
 bool useable_hardware_PWM(pin_t pin);
+
+#endif // _LPC1768_PWM_H_
diff --git a/Marlin/src/HAL/HAL_LPC1768/arduino.cpp b/Marlin/src/HAL/HAL_LPC1768/arduino.cpp
index 4832c57f27..794bbad248 100644
--- a/Marlin/src/HAL/HAL_LPC1768/arduino.cpp
+++ b/Marlin/src/HAL/HAL_LPC1768/arduino.cpp
@@ -22,11 +22,11 @@
 
 #ifdef TARGET_LPC1768
 
-#include "../../inc/MarlinConfig.h"
 #include "LPC1768_PWM.h"
-
 #include <lpc17xx_pinsel.h>
 
+#include "../../inc/MarlinConfig.h"
+
 // Interrupts
 void cli(void) { __disable_irq(); } // Disable
 void sei(void) { __enable_irq(); }  // Enable
diff --git a/Marlin/src/HAL/HAL_LPC1768/pinmapping.h b/Marlin/src/HAL/HAL_LPC1768/pinmapping.h
index 76efe3c0df..4c7195ad55 100644
--- a/Marlin/src/HAL/HAL_LPC1768/pinmapping.h
+++ b/Marlin/src/HAL/HAL_LPC1768/pinmapping.h
@@ -24,6 +24,8 @@
 #define __HAL_PINMAPPING_H__
 #include "../../core/macros.h"
 
+#include <stdint.h>
+
 typedef int16_t pin_t;
 
 #define PORT_0  000
diff --git a/Marlin/src/HAL/SPI.h b/Marlin/src/HAL/SPI.h
index 78e867a1fa..632c50b9ad 100644
--- a/Marlin/src/HAL/SPI.h
+++ b/Marlin/src/HAL/SPI.h
@@ -28,12 +28,8 @@
 #ifndef _SPI_H_
 #define _SPI_H_
 
-//#include "../inc/MarlinConfig.h"
-
 #include <stdint.h>
 
-#ifndef SPI_FULL_SPEED
-
 /**
  * SPI speed where 0 <= index <= 6
  *
@@ -73,6 +69,4 @@ void spiRead(uint8_t* buf, uint16_t nbyte);
 /** Write token and then write from 512 byte buffer to SPI (for SD card) */
 void spiSendBlock(uint8_t token, const uint8_t* buf);
 
-#endif // SPI_FULL_SPEED
-
 #endif // _SPI_H_
diff --git a/Marlin/src/Marlin.h b/Marlin/src/Marlin.h
index 9fa0fc964e..793b27d3b3 100644
--- a/Marlin/src/Marlin.h
+++ b/Marlin/src/Marlin.h
@@ -22,16 +22,16 @@
 #ifndef __MARLIN_H__
 #define __MARLIN_H__
 
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-
 #include "inc/MarlinConfig.h"
 
 #ifdef DEBUG_GCODE_PARSER
   #include "gcode/parser.h"
 #endif
 
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+
 void stop();
 
 void idle(
diff --git a/Marlin/src/inc/MarlinConfig.h b/Marlin/src/inc/MarlinConfig.h
index 5b2d5a5d8d..c52c319ec6 100644
--- a/Marlin/src/inc/MarlinConfig.h
+++ b/Marlin/src/inc/MarlinConfig.h
@@ -26,7 +26,6 @@
 #include "../core/boards.h"
 #include "../core/macros.h"
 #include "Version.h"
-#include "../HAL/SPI.h"
 #include "../../Configuration.h"
 #include "Conditionals_LCD.h"
 #include "../../Configuration_adv.h"
diff --git a/Marlin/src/module/probe.h b/Marlin/src/module/probe.h
index 012d3d8011..be7a3390ab 100644
--- a/Marlin/src/module/probe.h
+++ b/Marlin/src/module/probe.h
@@ -29,11 +29,10 @@
 
 #include "../inc/MarlinConfig.h"
 
-bool set_probe_deployed(const bool deploy);
-float probe_pt(const float &rx, const float &ry, const bool, const uint8_t, const bool printable=true);
-
 #if HAS_BED_PROBE
   extern float zprobe_zoffset;
+  bool set_probe_deployed(const bool deploy);
+  float probe_pt(const float &rx, const float &ry, const bool, const uint8_t, const bool printable=true);
   #define DEPLOY_PROBE() set_probe_deployed(true)
   #define STOW_PROBE() set_probe_deployed(false)
 #else
diff --git a/Marlin/src/module/stepper.cpp b/Marlin/src/module/stepper.cpp
index 98f2b326a3..4793f7687d 100644
--- a/Marlin/src/module/stepper.cpp
+++ b/Marlin/src/module/stepper.cpp
@@ -54,12 +54,12 @@
 #include "planner.h"
 #include "motion.h"
 
-#include "../Marlin.h"
 #include "../module/temperature.h"
 #include "../lcd/ultralcd.h"
 #include "../core/language.h"
 #include "../gcode/queue.h"
 #include "../sd/cardreader.h"
+#include "../Marlin.h"
 
 #if MB(ALLIGATOR)
   #include "../feature/dac/dac_dac084s085.h"