diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
index 00f346454e004d8fbd1520fa04c77db73f5c8f54..83af51bb83e8bd775408b060ee20dd9a0bf4b7a5 100644
--- a/drivers/staging/wilc1000/wilc_wlan.c
+++ b/drivers/staging/wilc1000/wilc_wlan.c
@@ -1374,6 +1374,7 @@ void wilc_wlan_cleanup(struct net_device *dev)
 	kfree(wilc->rx_buffer);
 	wilc->rx_buffer = NULL;
 	kfree(wilc->tx_buffer);
+	wilc->tx_buffer = NULL;
 
 	acquire_bus(wilc, ACQUIRE_AND_WAKEUP);