diff --git a/libusbhost/usbhost.c b/libusbhost/usbhost.c
index cd8000a..a3222cf 100644
--- a/libusbhost/usbhost.c
+++ b/libusbhost/usbhost.c
@@ -690,6 +690,6 @@
 int usb_request_cancel(struct usb_request *req)
 {
     struct usbdevfs_urb *urb = ((struct usbdevfs_urb*)req->private_data);
-    return ioctl(req->dev->fd, USBDEVFS_DISCARDURB, &urb);
+    return ioctl(req->dev->fd, USBDEVFS_DISCARDURB, urb);
 }