diff --git a/mac80211.c b/mac80211.c
index dd09ef1b..13c4e8ab 100644
--- a/mac80211.c
+++ b/mac80211.c
@@ -1323,7 +1323,7 @@ mt76_check_ccmp_pn(struct sk_buff *skb)
 		 * All further fragments will be validated by mac80211 only.
 		 */
 		if (ieee80211_is_frag(hdr) &&
-		    !ieee80211_is_first_frag(hdr->frame_control))
+		    !ieee80211_is_first_frag(hdr->seq_ctrl))
 			return;
 	}