diff --git a/src/drivers/usb/xhci.c b/src/drivers/usb/xhci.c
index 550097a81..cc48af033 100644
--- a/src/drivers/usb/xhci.c
+++ b/src/drivers/usb/xhci.c
@@ -1814,7 +1814,7 @@ static int xhci_command ( struct xhci_device *xhci, union xhci_trb *trb ) {
 	int rc;
 
 	/* Sanity check */
-	if ( xhci->pending != NULL ) {
+	if ( xhci->pending ) {
 		DBGC ( xhci, "XHCI %s command ring busy\n", xhci->name );
 		rc = -EBUSY;
 		goto err_pending;