diff --git a/src/soc/intel/tigerlake/acpi/platform.asl b/src/soc/intel/tigerlake/acpi/platform.asl
index 73458641fa..4b01aeb464 100644
--- a/src/soc/intel/tigerlake/acpi/platform.asl
+++ b/src/soc/intel/tigerlake/acpi/platform.asl
@@ -16,5 +16,5 @@
 Method (_PIC, 1)
 {
 	/* Remember the OS' IRQ routing choice. */
-	Store (Arg0, PICM)
+	PICM = Arg0
 }