diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index 151cdd0..1d68b8e 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -1537,6 +1537,8 @@
 void soc_fill_fadt(acpi_fadt_t *fadt);
 void mainboard_fill_fadt(acpi_fadt_t *fadt);
 
+void fill_fadt_extended_pm_io(acpi_fadt_t *fadt);
+
 void acpi_fill_gnvs(void);
 void acpi_fill_cnvs(void);