diff --git a/drivers/power/pmu_battery.c b/drivers/power/pmu_battery.c
index 60a8cf3..9346a86 100644
--- a/drivers/power/pmu_battery.c
+++ b/drivers/power/pmu_battery.c
@@ -159,7 +159,7 @@
 		if (!pbat)
 			break;
 
-		sprintf(pbat->name, "PMU battery %d", i);
+		sprintf(pbat->name, "PMU_battery_%d", i);
 		pbat->bat.name = pbat->name;
 		pbat->bat.properties = pmu_bat_props;
 		pbat->bat.num_properties = ARRAY_SIZE(pmu_bat_props);