diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index f7ffeec3913f..77ef223a9431 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -2096,7 +2096,8 @@ static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
 {
 	int tmp, hidden_ssid;
 
-	if (!memcmp(ifsta->ssid, ssid, ssid_len))
+	if (ssid_len == ifsta->ssid_len &&
+	    !memcmp(ifsta->ssid, ssid, ssid_len))
 		return 1;
 
 	if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)