diff --git a/src/ec/quanta/it8518/acpi/battery.asl b/src/ec/quanta/it8518/acpi/battery.asl
index 9c4844242b..5b51c892fc 100644
--- a/src/ec/quanta/it8518/acpi/battery.asl
+++ b/src/ec/quanta/it8518/acpi/battery.asl
@@ -67,7 +67,7 @@ Device (BATX)
 		{
 			// EC Is not ready
 			Sleep (5)
-			Decrement (Local0)
+			Local0--
 			If (LEqual (Local0, Zero))
 			{
 				Break