diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.c
index beecf79a35..a463bea80f 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.c
@@ -8,7 +8,7 @@
   PCI Root Bridges. So it means platform needs install PCI Root Bridge IO protocol for each
   PCI Root Bus and install PCI Host Bridge Resource Allocation Protocol.
 
-Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 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
 which accompanies this distribution.  The full text of the license may be found at
@@ -34,7 +34,7 @@ EFI_DRIVER_BINDING_PROTOCOL                   gPciBusDriverBinding = {
 };
 
 EFI_HANDLE                                    gPciHostBrigeHandles[PCI_MAX_HOST_BRIDGE_NUM];
-EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL  *gEfiIncompatiblePciDeviceSupport = NULL;
+EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL  *gIncompatiblePciDeviceSupport = NULL;
 UINTN                                         gPciHostBridgeNumber = 0;
 BOOLEAN                                       gFullEnumeration     = TRUE;
 UINT64                                        gAllOne              = 0xFFFFFFFFFFFFFFFFULL;
@@ -258,7 +258,7 @@ PciBusDriverBindingStart (
   gBS->LocateProtocol (
          &gEfiIncompatiblePciDeviceSupportProtocolGuid,
          NULL,
-         (VOID **) &gEfiIncompatiblePciDeviceSupport
+         (VOID **) &gIncompatiblePciDeviceSupport
          );
 
   //
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.h b/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.h
index baf88c7182..2226b1b052 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.h
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.h
@@ -307,7 +307,7 @@ struct _PCI_IO_DEVICE {
 //
 // Global Variables
 //
-extern EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL *gEfiIncompatiblePciDeviceSupport;
+extern EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL *gIncompatiblePciDeviceSupport;
 extern EFI_DRIVER_BINDING_PROTOCOL                  gPciBusDriverBinding;
 extern EFI_COMPONENT_NAME_PROTOCOL                  gPciBusComponentName;
 extern EFI_COMPONENT_NAME2_PROTOCOL                 gPciBusComponentName2;
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
index 4e68d03f39..29d80c4a23 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
@@ -1344,7 +1344,7 @@ UpdatePciInfo (
   Configuration = NULL;
   Status        = EFI_SUCCESS;
 
-  if (gEfiIncompatiblePciDeviceSupport == NULL) {
+  if (gIncompatiblePciDeviceSupport == NULL) {
     //
     // It can only be supported after the Incompatible PCI Device
     // Support Protocol has been installed
@@ -1352,7 +1352,7 @@ UpdatePciInfo (
     Status = gBS->LocateProtocol (
                     &gEfiIncompatiblePciDeviceSupportProtocolGuid,
                     NULL,
-                    (VOID **) &gEfiIncompatiblePciDeviceSupport
+                    (VOID **) &gIncompatiblePciDeviceSupport
                     );
   }
   if (Status == EFI_SUCCESS) {
@@ -1360,15 +1360,15 @@ UpdatePciInfo (
       // Check whether the device belongs to incompatible devices from protocol or not
       // If it is , then get its special requirement in the ACPI table
       //
-      Status = gEfiIncompatiblePciDeviceSupport->CheckDevice (
-                                                   gEfiIncompatiblePciDeviceSupport,
-                                                   PciIoDevice->Pci.Hdr.VendorId,
-                                                   PciIoDevice->Pci.Hdr.DeviceId,
-                                                   PciIoDevice->Pci.Hdr.RevisionID,
-                                                   PciIoDevice->Pci.Device.SubsystemVendorID,
-                                                   PciIoDevice->Pci.Device.SubsystemID,
-                                                   &Configuration
-                                                   );
+      Status = gIncompatiblePciDeviceSupport->CheckDevice (
+                                                gIncompatiblePciDeviceSupport,
+                                                PciIoDevice->Pci.Hdr.VendorId,
+                                                PciIoDevice->Pci.Hdr.DeviceId,
+                                                PciIoDevice->Pci.Hdr.RevisionID,
+                                                PciIoDevice->Pci.Device.SubsystemVendorID,
+                                                PciIoDevice->Pci.Device.SubsystemID,
+                                                &Configuration
+                                                );
 
   }