diff --git a/core/dp/txrx/ol_txrx_types.h b/core/dp/txrx/ol_txrx_types.h
index c85598776d01..ae5e4806d3af 100644
--- a/core/dp/txrx/ol_txrx_types.h
+++ b/core/dp/txrx/ol_txrx_types.h
@@ -148,6 +148,7 @@ enum tx_peer_level {
 	TXRX_IEEE11_A_G,
 	TXRX_IEEE11_N,
 	TXRX_IEEE11_AC,
+	TXRX_IEEE11_AX,
 	TXRX_IEEE11_MAX,
 };