diff --git a/driver/als_si114x.c b/driver/als_si114x.c
index fb4a19fc6a..482678ca15 100644
--- a/driver/als_si114x.c
+++ b/driver/als_si114x.c
@@ -498,6 +498,8 @@ static int init(const struct motion_sensor_t *s)
 		data->state = SI114X_IDLE;
 		resol = 7;
 	} else {
+		if (data->state == SI114X_NOT_READY)
+			return EC_ERROR_ACCESS_DENIED;
 		resol = 5;
 	}
 
@@ -535,7 +537,7 @@ const struct accelgyro_drv si114x_drv = {
 };
 
 struct si114x_drv_data_t g_si114x_data = {
-	.state = SI114X_IDLE,
+	.state = SI114X_NOT_READY,
 	.type_data = {
 		/* Proximity */
 		{
diff --git a/driver/als_si114x.h b/driver/als_si114x.h
index 4d524aea66..2e068eb50c 100644
--- a/driver/als_si114x.h
+++ b/driver/als_si114x.h
@@ -207,6 +207,7 @@
 extern const struct accelgyro_drv si114x_drv;
 
 enum si114x_state {
+	SI114X_NOT_READY,
 	SI114X_IDLE,
 	SI114X_ALS_IN_PROGRESS,
 	SI114X_ALS_IN_PROGRESS_PS_PENDING,