diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 33d9d0c..ebf6425 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -1111,7 +1111,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 	sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
 	sdata->u.ibss.ibss_join_req = jiffies;
 
-	memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN);
+	memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len);
 	sdata->u.ibss.ssid_len = params->ssid_len;
 
 	mutex_unlock(&sdata->u.ibss.mtx);