diff --git a/include/linux/mfd/pcf50633/adc.h b/include/linux/mfd/pcf50633/adc.h
index 56669b4183ad..b35e62801ffa 100644
--- a/include/linux/mfd/pcf50633/adc.h
+++ b/include/linux/mfd/pcf50633/adc.h
@@ -25,7 +25,8 @@
 #define PCF50633_REG_ADCS3		0x57
 
 #define PCF50633_ADCC1_ADCSTART		0x01
-#define PCF50633_ADCC1_RES_10BIT	0x02
+#define PCF50633_ADCC1_RES_8BIT		0x02
+#define PCF50633_ADCC1_RES_10BIT	0x00
 #define PCF50633_ADCC1_AVERAGE_NO	0x00
 #define PCF50633_ADCC1_AVERAGE_4	0x04
 #define PCF50633_ADCC1_AVERAGE_8	0x08