diff --git a/si_usb.c b/si_usb.c
index e8521b8..9494520 100644
--- a/si_usb.c
+++ b/si_usb.c
@@ -7,8 +7,7 @@
 
 #include <sysinit.h>
 
-#include <stm32f1xx_hal_gpio.h>
-
+#include <usbd_cdc_if.h>
 #include <usb_device.h>
 
 static void