diff --git a/drivers/media/dvb/ttusb-dec/ttusb_dec.c b/drivers/media/dvb/ttusb-dec/ttusb_dec.c
index fefdc05e84ac..de5829b863fd 100644
--- a/drivers/media/dvb/ttusb-dec/ttusb_dec.c
+++ b/drivers/media/dvb/ttusb-dec/ttusb_dec.c
@@ -1275,7 +1275,7 @@ static int ttusb_dec_boot_dsp(struct ttusb_dec *dec)
 	u8 b1[] = { 0x61 };
 	u8 *b;
 	char idstring[21];
-	u8 *firmware = NULL;
+	const u8 *firmware = NULL;
 	size_t firmware_size = 0;
 	u16 firmware_csum = 0;
 	__be16 firmware_csum_ns;