diff --git a/source/include/aclocal.h b/source/include/aclocal.h
index b8d33d521..062972f8e 100644
--- a/source/include/aclocal.h
+++ b/source/include/aclocal.h
@@ -1080,6 +1080,7 @@ typedef struct acpi_bit_register_info
     ACPI_BITMASK_POWER_BUTTON_STATUS   | \
     ACPI_BITMASK_SLEEP_BUTTON_STATUS   | \
     ACPI_BITMASK_RT_CLOCK_STATUS       | \
+    ACPI_BITMASK_PCIEXP_WAKE_STATUS    | \
     ACPI_BITMASK_WAKE_STATUS)
 
 #define ACPI_BITMASK_TIMER_ENABLE               0x0001