diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
index 3212eb4c0f2512d429b4aa725049bbea413796e7..969c06b7d2b77c69b2ae78692aa5ae6161c5fa56 100644
--- a/drivers/iio/adc/ad7923.c
+++ b/drivers/iio/adc/ad7923.c
@@ -29,10 +29,6 @@
 #define AD7923_PM_MODE_AS	(1)		/* auto shutdown */
 #define AD7923_PM_MODE_FS	(2)		/* full shutdown */
 #define AD7923_PM_MODE_OPS	(3)		/* normal operation */
-#define AD7923_CHANNEL_0	(0)		/* analog input 0 */
-#define AD7923_CHANNEL_1	(1)		/* analog input 1 */
-#define AD7923_CHANNEL_2	(2)		/* analog input 2 */
-#define AD7923_CHANNEL_3	(3)		/* analog input 3 */
 #define AD7923_SEQUENCE_OFF	(0)		/* no sequence fonction */
 #define AD7923_SEQUENCE_PROTECT	(2)		/* no interrupt write cycle */
 #define AD7923_SEQUENCE_ON	(3)		/* continuous sequence */