diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c
index 948364a3342f5b0e105f6e324ec75a693f1c8183..080e4eca65be9e3e22ce91b86c315ea020f26fe4 100644
--- a/drivers/scsi/fcoe/libfcoe.c
+++ b/drivers/scsi/fcoe/libfcoe.c
@@ -439,7 +439,7 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fc_lport *lport,
 	cap->encaps.fd_desc.fip_dlen = dlen / FIP_BPW;
 
 	mac = (struct fip_mac_desc *)skb_put(skb, sizeof(*mac));
-	memset(mac, 0, sizeof(mac));
+	memset(mac, 0, sizeof(*mac));
 	mac->fd_desc.fip_dtype = FIP_DT_MAC;
 	mac->fd_desc.fip_dlen = sizeof(*mac) / FIP_BPW;
 	if (dtype != FIP_DT_FLOGI && dtype != FIP_DT_FDISC) {