diff --git a/src/platforms/common/cdcacm.h b/src/platforms/common/cdcacm.h
index e2e6bd1..37df0b9 100644
--- a/src/platforms/common/cdcacm.h
+++ b/src/platforms/common/cdcacm.h
@@ -30,7 +30,6 @@
 
 #include "usb.h"
 
-void blackmagic_usb_init(void);
 void cdcacm_set_config(usbd_device *dev, uint16_t wValue);
 /* Returns current usb configuration, or 0 if not configured. */
 int cdcacm_get_config(void);
diff --git a/src/platforms/common/usb.h b/src/platforms/common/usb.h
index f706b00..656f4f2 100644
--- a/src/platforms/common/usb.h
+++ b/src/platforms/common/usb.h
@@ -41,4 +41,6 @@ extern usbd_device *usbdev;
 #define TOTAL_INTERFACES 5
 #endif
 
+void blackmagic_usb_init(void);
+
 #endif /*USB_H*/