diff --git a/selfdrive/common/gpio.h b/selfdrive/common/gpio.h
index 479b4f7e06..f501342690 100644
--- a/selfdrive/common/gpio.h
+++ b/selfdrive/common/gpio.h
@@ -1,5 +1,4 @@
-#ifndef GPIO_H
-#define GPIO_H
+#pragma once
 
 #include <stdbool.h>
 
@@ -20,16 +19,5 @@
   #define GPIO_STM_BOOT0        0
 #endif
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 int gpio_init(int pin_nr, bool output);
 int gpio_set(int pin_nr, bool high);
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif