diff --git a/src/mainboard/google/deltaur/dsdt.asl b/src/mainboard/google/deltaur/dsdt.asl
index fe86e15b45..fac58bdf42 100644
--- a/src/mainboard/google/deltaur/dsdt.asl
+++ b/src/mainboard/google/deltaur/dsdt.asl
@@ -25,6 +25,7 @@ DefinitionBlock(
 		{
 			#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 			#include <soc/intel/tigerlake/acpi/southbridge.asl>
+			#include <soc/intel/tigerlake/acpi/tcss.asl>
 		}
 	}