diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index e68326f28097..fcf8f2d208a8 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3518,8 +3518,12 @@ static int radio_enum_input(struct file *file, void *priv,
 static int radio_g_audio(struct file *file, void *priv,
 					struct v4l2_audio *a)
 {
+	if (a->index != 0)
+		return -EINVAL;
+
 	memset(a, 0, sizeof(*a));
 	strcpy(a->name, "Radio");
+
 	return 0;
 }