diff --git a/sys/dev/usb/umidi.c b/sys/dev/usb/umidi.c
index 6f8f8397e144..55da6ee89e1b 100644
--- a/sys/dev/usb/umidi.c
+++ b/sys/dev/usb/umidi.c
@@ -725,7 +725,7 @@ alloc_all_endpoints(struct umidi_softc *sc)
 
 	ep = sc->sc_endpoints;
 	for (i = sc->sc_out_num_endpoints+sc->sc_in_num_endpoints; i > 0; i--) {
-		err = alloc_pipe(ep++);
+		err = alloc_pipe(ep);
 		if (err != USBD_NORMAL_COMPLETION) {
 			for (; ep != sc->sc_endpoints; ep--)
 				free_pipe(ep-1);
@@ -733,6 +733,7 @@ alloc_all_endpoints(struct umidi_softc *sc)
 			sc->sc_endpoints = sc->sc_out_ep = sc->sc_in_ep = NULL;
 			break;
 		}
+		ep++;
 	}
 	return err;
 }