diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index a093f5b83cb6785eb516584ac61684ed4e96540b..b58f79626e10357dd38e29180be1b229f2085f17 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -1002,6 +1002,7 @@ struct iwl_wep_cmd {
 #define WEP_KEY_WEP_TYPE 1
 #define WEP_KEYS_MAX 4
 #define WEP_INVALID_OFFSET 0xff
+#define WEP_KEY_LEN_64 5
 #define WEP_KEY_LEN_128 13
 
 /******************************************************************************
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index b3caed487f03b1a910f953acc114c6c68f7c6061..3e257cfb44a2ada6f00325004e9d9d5fa3ebcd9b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -488,6 +488,8 @@ int iwl_remove_default_wep_key(struct iwl_priv *priv,
 	priv->default_wep_key--;
 	memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
 	ret = iwl_send_static_wepkey_cmd(priv, 1);
+	IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
+		      keyconf->keyidx, ret);
 	spin_unlock_irqrestore(&priv->sta_lock, flags);
 
 	return ret;
@@ -500,6 +502,12 @@ int iwl_set_default_wep_key(struct iwl_priv *priv,
 	int ret;
 	unsigned long flags;
 
+	if (keyconf->keylen != WEP_KEY_LEN_128 &&
+	    keyconf->keylen != WEP_KEY_LEN_64) {
+		IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen);
+		return -EINVAL;
+	}
+
 	keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
 	keyconf->hw_key_idx = HW_KEY_DEFAULT;
 	priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
@@ -516,6 +524,8 @@ int iwl_set_default_wep_key(struct iwl_priv *priv,
 							keyconf->keylen);
 
 	ret = iwl_send_static_wepkey_cmd(priv, 0);
+	IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
+		keyconf->keylen, keyconf->keyidx, ret);
 	spin_unlock_irqrestore(&priv->sta_lock, flags);
 
 	return ret;
@@ -662,6 +672,9 @@ int iwl_remove_dynamic_key(struct iwl_priv *priv,
 	key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
 	keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
 
+	IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
+		      keyconf->keyidx, sta_id);
+
 	if (keyconf->keyidx != keyidx) {
 		/* We need to remove a key with index different that the one
 		 * in the uCode. This means that the key we need to remove has
@@ -686,7 +699,6 @@ int iwl_remove_dynamic_key(struct iwl_priv *priv,
 	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 
-	IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
 	ret =  iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
 	spin_unlock_irqrestore(&priv->sta_lock, flags);
 	return ret;
@@ -716,6 +728,10 @@ int iwl_set_dynamic_key(struct iwl_priv *priv,
 		ret = -EINVAL;
 	}
 
+	IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
+		      keyconf->alg, keyconf->keylen, keyconf->keyidx,
+		      sta_id, ret);
+
 	return ret;
 }
 EXPORT_SYMBOL(iwl_set_dynamic_key);