diff --git a/firmware/target/arm/pbell/vibe500/usb-target.h b/firmware/target/arm/pbell/vibe500/usb-target.h
index a453a7cbfa..fb51b990c8 100644
--- a/firmware/target/arm/pbell/vibe500/usb-target.h
+++ b/firmware/target/arm/pbell/vibe500/usb-target.h
@@ -25,5 +25,6 @@
 #define USB_TARGET_H
 
 bool usb_init_device(void);
+void usb_pin_init(void); /* Init the GPIO input only */
 
 #endif