diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 212ac4842c16..671836210744 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -799,6 +799,8 @@ int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
 
 	setup.tx = tx_ant;
 	setup.rx = rx_ant;
+	setup.rx_chain_num = 0;
+	setup.tx_chain_num = 0;
 
 	rt2x00lib_config_antenna(rt2x00dev, setup);