diff --git a/src/mainboard/google/slippy/onboard.h b/src/mainboard/google/slippy/onboard.h
index 9e1dc8bf69..7c40e23183 100644
--- a/src/mainboard/google/slippy/onboard.h
+++ b/src/mainboard/google/slippy/onboard.h
@@ -17,7 +17,7 @@
 #define ONBOARD_H
 
 #define BOARD_LIGHTSENSOR_NAME		"lightsensor"
-#define BOARD_LIGHTSENSOR_IRQ		51	/* PIRQT */
+#define BOARD_LIGHTSENSOR_IRQ		35	/* PIRQT */
 #define BOARD_LIGHTSENSOR_I2C_BUS	2	/* I2C1 */
 #define BOARD_LIGHTSENSOR_I2C_ADDR	0x44