diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c
index a1d9b0792a1e..b9defcdeb7ef 100644
--- a/sound/usb/6fire/firmware.c
+++ b/sound/usb/6fire/firmware.c
@@ -42,8 +42,8 @@ static const u8 ep_w_max_packet_size[] = {
 	0x94, 0x01, 0x5c, 0x02  /* alt 3: 404 EP2 and 604 EP6 (25 fpp) */
 };
 
-static const u8 known_fw_versions[][4] = {
-	{ 0x03, 0x01, 0x0b, 0x00 }
+static const u8 known_fw_versions[][2] = {
+	{ 0x03, 0x01 }
 };
 
 struct ihex_record {
@@ -343,7 +343,7 @@ static int usb6fire_fw_check(u8 *version)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(known_fw_versions); i++)
-		if (!memcmp(version, known_fw_versions + i, 4))
+		if (!memcmp(version, known_fw_versions + i, 2))
 			return 0;
 
 	snd_printk(KERN_ERR PREFIX "invalid fimware version in device: %*ph. "