diff --git a/configs/stm32butterfly2/src/stm32_butterfly2.h b/configs/stm32butterfly2/src/stm32_butterfly2.h
index 0fa7fd5b197..20d43a06dc7 100644
--- a/configs/stm32butterfly2/src/stm32_butterfly2.h
+++ b/configs/stm32butterfly2/src/stm32_butterfly2.h
@@ -32,6 +32,9 @@
  * POSSIBILITY OF SUCH DAMAGE.
  ****************************************************************************/
 
+#ifndef __CONFIGS_STM32_BUTTERFLY2_SRC_STM32_BUTTERFLY2_H 1
+#define __CONFIGS_STM32_BUTTERFLY2_SRC_STM32_BUTTERFLY2_H
+
 /*****************************************************************************
  * Included Files
  ****************************************************************************/
@@ -124,3 +127,5 @@ int stm32_usbhost_initialize(void);
 static inline int stm32_usbhost_initialize(void) {}
 #endif
 
+#endif // __CONFIGS_STM32_BUTTERFLY2_SRC_STM32_BUTTERFLY2_H
+