diff --git a/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Include/Common/EdkIIGlueDefinitionChangesPeim.h b/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Include/Common/EdkIIGlueDefinitionChangesPeim.h
index 635b0dc51a..6d9779ee9f 100644
--- a/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Include/Common/EdkIIGlueDefinitionChangesPeim.h
+++ b/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Include/Common/EdkIIGlueDefinitionChangesPeim.h
@@ -103,7 +103,6 @@ typedef EFI_MISC_SMBIOS_STRUCT_ENCAPSULATION         EFI_MISC_SMBIOS_STRUCT_ENCA
 // typedef Edk types - EdkII types
 //
 typedef PEI_RECOVERY_MODULE_INTERFACE                EFI_PEI_RECOVERY_MODULE_PPI;
-typedef PEI_CPU_IO_PPI                               EFI_PEI_CPU_IO_PPI;
 typedef PEI_STALL_PPI                                EFI_PEI_STALL_PPI;
 typedef PEI_SMBUS_PPI                                EFI_PEI_SMBUS_PPI;
 typedef PEI_READ_ONLY_VARIABLE_PPI                   EFI_PEI_READ_ONLY_VARIABLE_PPI;