diff --git a/src/mainboard/kontron/bsl6/dsdt.asl b/src/mainboard/kontron/bsl6/dsdt.asl
index 225c8a5ec9..3be51152d6 100644
--- a/src/mainboard/kontron/bsl6/dsdt.asl
+++ b/src/mainboard/kontron/bsl6/dsdt.asl
@@ -4,7 +4,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,
+	ACPI_DSDT_REV_2,
 	OEM_ID,
 	ACPI_TABLE_CREATOR,
 	0x20110725
diff --git a/src/mainboard/siemens/chili/dsdt.asl b/src/mainboard/siemens/chili/dsdt.asl
index 6fd12b15f2..9b49942047 100644
--- a/src/mainboard/siemens/chili/dsdt.asl
+++ b/src/mainboard/siemens/chili/dsdt.asl
@@ -4,7 +4,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0 and up
+	ACPI_DSDT_REV_2,
 	OEM_ID,
 	ACPI_TABLE_CREATOR,
 	0x20110725	// OEM revision