1 files changed, 2 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index aed6d2ad4c90..50ff82aa4890 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6566,7 +6566,8 @@ void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
         if (addr)
                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
-        NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
+        if (key_id != -1)
+                NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
         if (tsc)
                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);