diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c771b7a..9c5fd86 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -823,5 +823,7 @@
 int ieee80211_is_eapol(const struct sk_buff *skb);
 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
 			     int rate, int erp, int short_preamble);
+void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
+				     struct ieee80211_hdr *hdr);
 
 #endif /* IEEE80211_I_H */