diff --git a/headers/os/drivers/ACPI.h b/headers/os/drivers/ACPI.h
index 221c649f49..aeea7072c2 100644
--- a/headers/os/drivers/ACPI.h
+++ b/headers/os/drivers/ACPI.h
@@ -133,6 +133,7 @@ typedef struct acpi_data {
 
 enum {
 	ACPI_ALLOCATE_BUFFER = -1,
+	ACPI_ALLOCATE_LOCAL_BUFFER = -2,
 };