diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index f5582477c7e4..8b4ce32a2cd1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -1272,7 +1272,7 @@ int __mt7921_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2,
 		.mtcl_conf = mt792x_acpi_get_mtcl_conf(&dev->phy, alpha2),
 	};
 	int ret, valid_cnt = 0;
-	u16 buf_len = 0;
+	u32 buf_len = 0;
 	u8 *pos;
 
 	if (!clc)
@@ -1283,7 +1283,7 @@ int __mt7921_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2,
 	if (mt76_find_power_limits_node(&dev->mt76))
 		req.cap |= CLC_CAP_DTS_EN;
 
-	buf_len = le16_to_cpu(clc->len) - sizeof(*clc);
+	buf_len = le32_to_cpu(clc->len) - sizeof(*clc);
 	pos = clc->data;
 	while (buf_len > 16) {
 		struct mt7921_clc_rule *rule = (struct mt7921_clc_rule *)pos;