diff --git a/MdePkg/Include/IndustryStandard/Acpi3_0.h b/MdePkg/Include/IndustryStandard/Acpi3_0.h
index 8ec434b5b7..04b79a47bf 100644
--- a/MdePkg/Include/IndustryStandard/Acpi3_0.h
+++ b/MdePkg/Include/IndustryStandard/Acpi3_0.h
@@ -186,10 +186,12 @@ typedef struct {
 // Fixed ACPI Description Table Boot Architecture Flags
 // All other bits are reserved and must be set to 0.
 //
-#define EFI_ACPI_3_0_LEGACY_DEVICES    (1 << 0)
-#define EFI_ACPI_3_0_8042              (1 << 1)
-#define EFI_ACPI_3_0_VGA_NOT_PRESENT   (1 << 2)
-#define EFI_ACPI_3_0_MSI_NOT_SUPPORTED (1 << 3)
+#define EFI_ACPI_3_0_LEGACY_DEVICES     (1 << 0)
+#define EFI_ACPI_3_0_8042               (1 << 1)
+#define EFI_ACPI_3_0_VGA_NOT_PRESENT    (1 << 2)
+#define EFI_ACPI_3_0_MSI_NOT_SUPPORTED  (1 << 3)
+#define EFI_ACPI_3_0_PCIE_ASPM_CONTROLS (1 << 4)
+
 //
 // Fixed ACPI Description Table Fixed Feature Flags
 // All other bits are reserved and must be set to 0.