diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
index e9d5c02..d9e9355 100644
--- a/drivers/vhost/tcm_vhost.h
+++ b/drivers/vhost/tcm_vhost.h
@@ -93,6 +93,7 @@
 	int abi_version;
 	char vhost_wwpn[TRANSPORT_IQN_LEN];
 	unsigned short vhost_tpgt;
+	unsigned short reserved;
 };
 
 /* VHOST_SCSI specific defines */