diff --git a/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/PeripheralPins.c b/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/PeripheralPins.c
index 63763e9db7..28504fc105 100644
--- a/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/PeripheralPins.c
+++ b/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/PeripheralPins.c
@@ -28,8 +28,8 @@
  *******************************************************************************
  * Automatically generated from STM32F407Z(E-G)Tx.xml
  */
-#include "Arduino.h"
-#include "PeripheralPins.h"
+#include <Arduino.h>
+#include <PeripheralPins.h>
 
 /* =====
  * Note: Commented lines are alternative possibilities which are not used by default.
diff --git a/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/variant.h b/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/variant.h
index 542f6c377b..ae95d7d1a3 100644
--- a/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/variant.h
+++ b/buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/variant.h
@@ -27,14 +27,12 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *******************************************************************************
  */
-
-#ifndef _VARIANT_ARDUINO_STM32_
-#define _VARIANT_ARDUINO_STM32_
+#pragma once
 
 /*----------------------------------------------------------------------------
  *        Headers
  *----------------------------------------------------------------------------*/
-#include "PeripheralPins.h"
+#include <PeripheralPins.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -292,5 +290,3 @@ extern const PinName digitalPin[];
 #define SERIAL_PORT_MONITOR     Serial
 #define SERIAL_PORT_HARDWARE    Serial1
 #endif
-
-#endif /* _VARIANT_ARDUINO_STM32_ */
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_F407VE/PeripheralPins.c b/buildroot/share/PlatformIO/variants/MARLIN_F407VE/PeripheralPins.c
index 4e6a71d801..f76cc14bf9 100644
--- a/buildroot/share/PlatformIO/variants/MARLIN_F407VE/PeripheralPins.c
+++ b/buildroot/share/PlatformIO/variants/MARLIN_F407VE/PeripheralPins.c
@@ -28,8 +28,8 @@
  *******************************************************************************
  * Automatically generated from STM32F407Z(E-G)Tx.xml
  */
-#include "Arduino.h"
-#include "PeripheralPins.h"
+#include <Arduino.h>
+#include <PeripheralPins.h>
 
 /* =====
  * Note: Commented lines are alternative possibilities which are not used per default.
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_F407VE/variant.h b/buildroot/share/PlatformIO/variants/MARLIN_F407VE/variant.h
index 9e383114e6..c0a29322f3 100644
--- a/buildroot/share/PlatformIO/variants/MARLIN_F407VE/variant.h
+++ b/buildroot/share/PlatformIO/variants/MARLIN_F407VE/variant.h
@@ -27,14 +27,12 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *******************************************************************************
  */
-
-#ifndef _VARIANT_ARDUINO_STM32_
-#define _VARIANT_ARDUINO_STM32_
+#pragma once
 
 /*----------------------------------------------------------------------------
  *        Headers
  *----------------------------------------------------------------------------*/
-#include "PeripheralPins.h"
+#include <PeripheralPins.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -215,5 +213,3 @@ extern const PinName digitalPin[];
 #define SERIAL_PORT_MONITOR     Serial
 #define SERIAL_PORT_HARDWARE    Serial1
 #endif
-
-#endif /* _VARIANT_ARDUINO_STM32_ */