diff --git a/drivers/power/rk30_factory_adc_battery.c b/drivers/power/rk30_factory_adc_battery.c
index 02396a374fc1..04527ec71050 100644
--- a/drivers/power/rk30_factory_adc_battery.c
+++ b/drivers/power/rk30_factory_adc_battery.c
@@ -249,7 +249,7 @@ static ssize_t bat_param_read(struct device *dev,struct device_attribute *attr,
 #endif
 	return 0;
 }
-DEVICE_ATTR(batparam, 0777, bat_param_read,NULL);
+DEVICE_ATTR(batparam, 0664, bat_param_read,NULL);
 
 
 static ssize_t rkbatt_show_debug_attrs(struct device *dev,