diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 09b829dce1b3..76f541fc29d4 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -8617,6 +8617,12 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 				   NL80211_FEATURE_AP_SCAN;
 
+	/* MLO is not yet supported so disable Wireless Extensions for now
+	 * to make sure ath12k users don't use it. This flag can be removed
+	 * once WIPHY_FLAG_SUPPORTS_MLO is enabled.
+	 */
+	wiphy->flags |= WIPHY_FLAG_DISABLE_WEXT;
+
 	hw->queues = ATH12K_HW_MAX_QUEUES;
 	wiphy->tx_queue_len = ATH12K_QUEUE_LEN;
 	hw->offchannel_tx_hw_queue = ATH12K_HW_MAX_QUEUES - 1;