diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index c1b13b3411cd..24a35fccca9d 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -5733,7 +5733,7 @@ static u8 ieee80211_max_rx_chains(struct ieee80211_link_data *link,
 	he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY,
 					     ies->data, ies->len);
 
-	if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap))
+	if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap) + 1)
 		return chains;
 
 	/* skip one byte ext_tag_id */