diff --git a/drivers/usbhost/usbhost_bthci.c b/drivers/usbhost/usbhost_bthci.c
index 1b14a0b7787..ed0fc1d0e98 100644
--- a/drivers/usbhost/usbhost_bthci.c
+++ b/drivers/usbhost/usbhost_bthci.c
@@ -126,8 +126,6 @@ static inline void usbhost_freeclass(FAR struct usbhost_state_s *usbclass);
 
 static int usbhost_allocdevno(FAR struct usbhost_state_s *priv);
 static void usbhost_freedevno(FAR struct usbhost_state_s *priv);
-static inline void usbhost_mkdevname(FAR struct usbhost_state_s *priv,
-                                     FAR char *devname);
 
 /* Worker thread actions */
 
@@ -326,12 +324,6 @@ static void usbhost_freedevno(FAR struct usbhost_state_s *priv)
     }
 }
 
-static inline void usbhost_mkdevname(FAR struct usbhost_state_s *priv,
-                                     FAR char *devname)
-{
-  snprintf(devname, DEV_NAMELEN, DEV_FORMAT, priv->devchar);
-}
-
 /****************************************************************************
  * Name: usbhost_destroy
  *