diff --git a/MdePkg/Include/Protocol/MpService.h b/MdePkg/Include/Protocol/MpService.h
index 390ad0a97f..c86b8b8e24 100644
--- a/MdePkg/Include/Protocol/MpService.h
+++ b/MdePkg/Include/Protocol/MpService.h
@@ -229,7 +229,7 @@ EFI_STATUS
 (EFIAPI *EFI_MP_SERVICES_GET_PROCESSOR_INFO)(
   IN  EFI_MP_SERVICES_PROTOCOL   *This,
   IN  UINTN                      ProcessorNumber,
-  OUT EFI_PROCESSOR_INFORMATION  *ProcessorContextBuffer
+  OUT EFI_PROCESSOR_INFORMATION  *ProcessorInfoBuffer
   );
 
 /**
@@ -567,7 +567,7 @@ EFI_STATUS
 (EFIAPI *EFI_MP_SERVICES_ENABLEDISABLEAP)(
   IN  EFI_MP_SERVICES_PROTOCOL  *This,
   IN  UINTN                     ProcessorNumber,
-  IN  BOOLEAN                   NewAPState,
+  IN  BOOLEAN                   EnableAP,
   IN  UINT32                    *HealthFlag OPTIONAL
   );