diff --git a/include/acpi/acutils.h b/include/acpi/acutils.h
index beb07ac8..3c66f54 100644
--- a/include/acpi/acutils.h
+++ b/include/acpi/acutils.h
@@ -453,6 +453,8 @@
 /*
  * utmisc
  */
+const char *acpi_ut_validate_exception(acpi_status status);
+
 u8 acpi_ut_is_aml_table(struct acpi_table_header *table);
 
 acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id);