diff --git a/drivers/media/video/cx25821/cx25821-video.c b/drivers/media/video/cx25821/cx25821-video.c
index 084fc0899e13ed3c42fad1c1f9cd8b6c750b4662..4d6907cda75b8a0c2405e88bb569ba6953b64d81 100644
--- a/drivers/media/video/cx25821/cx25821-video.c
+++ b/drivers/media/video/cx25821/cx25821-video.c
@@ -1312,7 +1312,7 @@ int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
 			return err;
 	}
 
-	if (i > 2) {
+	if (i >= CX25821_NR_INPUT) {
 		dprintk(1, "%s(): -EINVAL\n", __func__);
 		return -EINVAL;
 	}
diff --git a/drivers/media/video/cx25821/cx25821.h b/drivers/media/video/cx25821/cx25821.h
index db2615b2bac3afc9a8ec2d6f4203426e90dff906..2d2d00932823a09dae7cb07595d1cb42b4613e28 100644
--- a/drivers/media/video/cx25821/cx25821.h
+++ b/drivers/media/video/cx25821/cx25821.h
@@ -98,6 +98,7 @@
 #define CX25821_BOARD_CONEXANT_ATHENA10 1
 #define MAX_VID_CHANNEL_NUM     12
 #define VID_CHANNEL_NUM 8
+#define CX25821_NR_INPUT 2
 
 struct cx25821_fmt {
 	char *name;
@@ -196,7 +197,7 @@ struct cx25821_board {
 	unsigned char radio_addr;
 
 	u32 clk_freq;
-	struct cx25821_input input[2];
+	struct cx25821_input input[CX25821_NR_INPUT];
 };
 
 struct cx25821_subid {