diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index 3d7f22f86e..257a5d6125 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -4,7 +4,7 @@
 // It also provides the definitions(including PPIs/PROTOCOLs/GUIDs and library classes)
 // and libraries instances, which are used for those modules.
 //
-// Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
 //
 // This program and the accompanying materials are licensed and made available under
 // the terms and conditions of the BSD License that accompanies this distribution.
@@ -915,3 +915,14 @@
                                                                                         "equal to 8.<BR>\n"
                                                                                         "For certain UART whose register needs to be accessed in DWORD aligned address,\n"
                                                                                         "RegisterStride equals to 4.\n"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdAcpiExposedTableVersions_PROMPT  #language en-US "Exposed ACPI table versions."
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdAcpiExposedTableVersions_HELP  #language en-US "Indicates which ACPI versions are targeted by the ACPI tables exposed to the OS\n"
+                                                                                             "These values are aligned with the definitions in MdePkg/Include/Protocol/AcpiSystemDescriptionTable.h\n"
+                                                                                             "BIT 1 - EFI_ACPI_TABLE_VERSION_1_0B.<BR>\n"
+                                                                                             "BIT 2 - EFI_ACPI_TABLE_VERSION_2_0.<BR>\n"
+                                                                                             "BIT 3 - EFI_ACPI_TABLE_VERSION_3_0.<BR>\n"
+                                                                                             "BIT 4 - EFI_ACPI_TABLE_VERSION_4_0.<BR>\n"
+                                                                                             "BIT 5 - EFI_ACPI_TABLE_VERSION_5_0.<BR>"
+