diff --git a/drivers/net/wireless/iwlwifi/iwl-mac80211.c b/drivers/net/wireless/iwlwifi/iwl-mac80211.c
index 794b735264e62a197974a16c169d0cd152e15366..55308b88faac73cbb68c18eff65202e742c2d770 100644
--- a/drivers/net/wireless/iwlwifi/iwl-mac80211.c
+++ b/drivers/net/wireless/iwlwifi/iwl-mac80211.c
@@ -517,6 +517,17 @@ static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 		return -EOPNOTSUPP;
 	}
 
+	switch (key->cipher) {
+	case WLAN_CIPHER_SUITE_TKIP:
+		key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+		/* fall through */
+	case WLAN_CIPHER_SUITE_CCMP:
+		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+		break;
+	default:
+		break;
+	}
+
 	/*
 	 * We could program these keys into the hardware as well, but we
 	 * don't expect much multicast traffic in IBSS and having keys