diff --git a/sys/dev/usb/usb_mem.c b/sys/dev/usb/usb_mem.c
index 143ce2ed2bf8..ae824e19a01c 100644
--- a/sys/dev/usb/usb_mem.c
+++ b/sys/dev/usb/usb_mem.c
@@ -183,6 +183,8 @@ usb_block_allocmem(bus_dma_tag_t tag, size_t size, size_t align,
 	    usbmem_callback, p, 0))
 		goto memfree;
 
+	/* XXX - override the tag, ok since we never free it */
+	p->tag = tag;
 	*dmap = p;
 	return (USBD_NORMAL_COMPLETION);