diff --git a/include/acpi/acpredef.h b/include/acpi/acpredef.h
index 619fb75f8861b3822d8df03ab83bee0b809fe460..e6452dbf39e3dc24faaf356061a0b029933631ce 100644
--- a/include/acpi/acpredef.h
+++ b/include/acpi/acpredef.h
@@ -346,7 +346,7 @@ static const union acpi_predefined_info predefined_names[] = {
 
 	/* Acpi 1.0 defined _WAK with no return value. Later, it was changed to return a package */
 
-	{.info = {"_WAK", 1, ACPI_RTYPE_NONE | ACPI_RTYPE_PACKAGE}},
+	{.info = {"_WAK", 1, ACPI_RTYPE_NONE | ACPI_RTYPE_INTEGER | ACPI_RTYPE_PACKAGE}},
 	{.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2, 0, 0, 0}},	/* fixed (2 Int), but is optional */
 	{.ret_info = {0, 0, 0, 0, 0, 0}}	/* Table terminator */
 };