diff --git a/drivers/media/video/cx18/cx18-av-firmware.c b/drivers/media/video/cx18/cx18-av-firmware.c
index 526e142156cd6c969ef6c7b1595242f4819a64a2..a1a6af6c1c8f5888a83432b35bbf4d5b69bac2fe 100644
--- a/drivers/media/video/cx18/cx18-av-firmware.c
+++ b/drivers/media/video/cx18/cx18-av-firmware.c
@@ -29,7 +29,7 @@ int cx18_av_loadfw(struct cx18 *cx)
 	const struct firmware *fw = NULL;
 	u32 size;
 	u32 v;
-	u8 *ptr;
+	const u8 *ptr;
 	int i;
 
 	if (request_firmware(&fw, FWFILE, &cx->dev->dev) != 0) {