diff --git a/mac80211.c b/mac80211.c
index 00c2a875..0c71d671 100644
--- a/mac80211.c
+++ b/mac80211.c
@@ -287,7 +287,9 @@ mt76_phy_init(struct mt76_dev *dev, struct ieee80211_hw *hw)
 	wiphy->available_antennas_rx = dev->phy.antenna_mask;
 
 	hw->txq_data_size = sizeof(struct mt76_txq);
-	hw->max_tx_fragments = 16;
+
+	if (!hw->max_tx_fragments)
+		hw->max_tx_fragments = 16;
 
 	ieee80211_hw_set(hw, SIGNAL_DBM);
 	ieee80211_hw_set(hw, PS_NULLFUNC_STACK);