diff --git a/drivers/net/wireless/mediatek/mt7601u/eeprom.c b/drivers/net/wireless/mediatek/mt7601u/eeprom.c
index 05d729be0c659afa8837355e416f17d1e77b4fbb..76117b40288050eb2f4ab71625aae37bec9f9053 100644
--- a/drivers/net/wireless/mediatek/mt7601u/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt7601u/eeprom.c
@@ -75,7 +75,7 @@ static int
 mt7601u_efuse_physical_size_check(struct mt7601u_dev *dev)
 {
 	const int map_reads = DIV_ROUND_UP(MT_EFUSE_USAGE_MAP_SIZE, 16);
-	u8 data[map_reads * 16];
+	u8 data[round_up(MT_EFUSE_USAGE_MAP_SIZE, 16)];
 	int ret, i;
 	u32 start = 0, end = 0, cnt_free;