diff --git a/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/idebus.h b/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/idebus.h
index da7a03f71b..dc3508c095 100644
--- a/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/idebus.h
+++ b/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/idebus.h
@@ -37,7 +37,7 @@
 #include <Library/UefiRuntimeServicesTableLib.h>
 #include <Library/DevicePathLib.h>
 
-#include <IndustryStandard/pci22.h>
+#include <IndustryStandard/Pci22.h>
 #include "idedata.h"
 
 //
diff --git a/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciHotPlugSupport.c b/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciHotPlugSupport.c
index 6128542111..0883d0d2dd 100644
--- a/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciHotPlugSupport.c
+++ b/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciHotPlugSupport.c
@@ -12,7 +12,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 **/
 
 
-#include "Pcibus.h"
+#include "pcibus.h"
 #include "PciHotPlugSupport.h"
 
 EFI_PCI_HOT_PLUG_INIT_PROTOCOL  *gPciHotPlugInit;
diff --git a/IntelFrameworkModulePkg/Library/PciIncompatibleDeviceSupportLib/IncompatiblePciDeviceList.h b/IntelFrameworkModulePkg/Library/PciIncompatibleDeviceSupportLib/IncompatiblePciDeviceList.h
index 69965cb19b..a21c219559 100644
--- a/IntelFrameworkModulePkg/Library/PciIncompatibleDeviceSupportLib/IncompatiblePciDeviceList.h
+++ b/IntelFrameworkModulePkg/Library/PciIncompatibleDeviceSupportLib/IncompatiblePciDeviceList.h
@@ -22,7 +22,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/MemoryAllocationLib.h>
 #include <Library/DebugLib.h>
 
-#include <IndustryStandard/pci22.h>
+#include <IndustryStandard/Pci22.h>
 #include <IndustryStandard/Acpi.h>