diff --git a/src/ec/roda/it8518/acpi/battery.asl b/src/ec/roda/it8518/acpi/battery.asl
index 7180ace088..f164587102 100644
--- a/src/ec/roda/it8518/acpi/battery.asl
+++ b/src/ec/roda/it8518/acpi/battery.asl
@@ -46,8 +46,7 @@ Device (BAT0)
 
 		Local0 = 0x0f
 
-		Local1 = ECPS
-		Local1 &= 0x02
+		Local1 = ECPS & 0x02
 		If (Local1 == 0x02)
 		{
 			Local0 = 0x1f
@@ -75,8 +74,7 @@ Device (BAT0)
 	{
 		Printf ("-----> BAT0: _BST")
 
-		Local0 = B0ST
-		Local0 &= 0x40
+		Local0 = B0ST & 0x40
 		If (Local0 == 0x40)
 		{
 			If (PWRS == 1)
diff --git a/src/ec/roda/it8518/acpi/ec.asl b/src/ec/roda/it8518/acpi/ec.asl
index 3b9a38ded1..fc241be8af 100644
--- a/src/ec/roda/it8518/acpi/ec.asl
+++ b/src/ec/roda/it8518/acpi/ec.asl
@@ -132,8 +132,7 @@ Device (EC0)
 	{
 		Printf ("-----> EC: _Q43")
 
-		Local0 = BRIG
-		Local0 += 1
+		Local0 = BRIG + 1
 		If (Local0 > 0xaa) {
 			Local0 = 0xaa
 		}
@@ -148,8 +147,7 @@ Device (EC0)
 	{
 		Printf ("-----> EC: _Q44")
 
-		Local0 = BRIG
-		Local0 -= 1
+		Local0 = BRIG - 1
 		If (Local0 < 0xa0)
 		{
 			Local0 = 0xa0