diff --git a/drivers/net/ethernet/cadence/macb_ptp.c b/drivers/net/ethernet/cadence/macb_ptp.c
index a63bf29c4fa8..f2b09100f710 100644
--- a/drivers/net/ethernet/cadence/macb_ptp.c
+++ b/drivers/net/ethernet/cadence/macb_ptp.c
@@ -355,8 +355,10 @@ void gem_ptp_remove(struct net_device *ndev)
 {
 	struct macb *bp = netdev_priv(ndev);
 
-	if (bp->ptp_clock)
+	if (bp->ptp_clock) {
 		ptp_clock_unregister(bp->ptp_clock);
+		bp->ptp_clock = NULL;
+	}
 
 	gem_ptp_clear_timer(bp);