diff --git a/drivers/power/jz4740-battery.c b/drivers/power/jz4740-battery.c
index abdfc21ec13f..88f04f4d1a70 100644
--- a/drivers/power/jz4740-battery.c
+++ b/drivers/power/jz4740-battery.c
@@ -208,7 +208,7 @@ static void jz_battery_update(struct jz_battery *jz_battery)
 	}
 
 	voltage = jz_battery_read_voltage(jz_battery);
-	if (abs(voltage - jz_battery->voltage) < 50000) {
+	if (voltage >= 0 && abs(voltage - jz_battery->voltage) > 50000) {
 		jz_battery->voltage = voltage;
 		has_changed = true;
 	}