diff --git a/radio/src/targets/common/arm/stm32/usb_driver.h b/radio/src/targets/common/arm/stm32/usb_driver.h
index 90e1ccd84..350ceace0 100644
--- a/radio/src/targets/common/arm/stm32/usb_driver.h
+++ b/radio/src/targets/common/arm/stm32/usb_driver.h
@@ -21,6 +21,8 @@
 #ifndef OPENTX_USB_DRIVER_H
 #define OPENTX_USB_DRIVER_H
 
+#include <stdbool.h>
+
 // USB driver
 enum usbMode {
   USB_UNSELECTED_MODE,