diff --git a/EdkCompatibilityPkg/Foundation/Guid/PeiFlushInstructionCache/PeiFlushInstructionCache.h b/EdkCompatibilityPkg/Foundation/Guid/PeiFlushInstructionCache/PeiFlushInstructionCache.h
index 7bd6c8956c..132d206dd1 100644
--- a/EdkCompatibilityPkg/Foundation/Guid/PeiFlushInstructionCache/PeiFlushInstructionCache.h
+++ b/EdkCompatibilityPkg/Foundation/Guid/PeiFlushInstructionCache/PeiFlushInstructionCache.h
@@ -35,9 +35,9 @@ EFI_STATUS
   IN UINT64                                            Length
   );
 
-typedef struct _EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL {
+struct _EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL {
   EFI_PEI_FLUSH_INSTRUCTION_CACHE_FLUSH  Flush;
-} EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL;
+};
 
 extern EFI_GUID gEfiPeiFlushInstructionCacheGuid;
 
diff --git a/EdkCompatibilityPkg/Foundation/Guid/PeiPeCoffLoader/PeiPeCoffLoader.h b/EdkCompatibilityPkg/Foundation/Guid/PeiPeCoffLoader/PeiPeCoffLoader.h
index 3589f31ff6..02fa1c2223 100644
--- a/EdkCompatibilityPkg/Foundation/Guid/PeiPeCoffLoader/PeiPeCoffLoader.h
+++ b/EdkCompatibilityPkg/Foundation/Guid/PeiPeCoffLoader/PeiPeCoffLoader.h
@@ -104,12 +104,12 @@ EFI_STATUS
   IN EFI_PEI_PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
   );
 
-typedef struct _EFI_PEI_PE_COFF_LOADER_PROTOCOL {
+struct _EFI_PEI_PE_COFF_LOADER_PROTOCOL {
   EFI_PEI_PE_COFF_LOADER_GET_IMAGE_INFO  GetImageInfo;
   EFI_PEI_PE_COFF_LOADER_LOAD_IMAGE      LoadImage;
   EFI_PEI_PE_COFF_LOADER_RELOCATE_IMAGE  RelocateImage;
   EFI_PEI_PE_COFF_LOADER_UNLOAD_IMAGE    UnloadImage;
-} EFI_PEI_PE_COFF_LOADER_PROTOCOL;
+};
 
 extern EFI_GUID gEfiPeiPeCoffLoaderGuid;
 
diff --git a/EdkCompatibilityPkg/Foundation/Guid/PeiTransferControl/PeiTransferControl.h b/EdkCompatibilityPkg/Foundation/Guid/PeiTransferControl/PeiTransferControl.h
index 0ed5a0d7a8..0035b49cce 100644
--- a/EdkCompatibilityPkg/Foundation/Guid/PeiTransferControl/PeiTransferControl.h
+++ b/EdkCompatibilityPkg/Foundation/Guid/PeiTransferControl/PeiTransferControl.h
@@ -42,11 +42,11 @@ EFI_STATUS
   IN VOID                                       *Context
   );
 
-typedef struct _EFI_PEI_TRANSFER_CONTROL_PROTOCOL {
+struct _EFI_PEI_TRANSFER_CONTROL_PROTOCOL {
   EFI_PEI_TRANSFER_CONTROL_LONG_JUMP   SetJump;
   EFI_PEI_TRANSFER_CONTROL_LONG_JUMP   LongJump;
   UINT32                               JumpContextSize;
-} EFI_PEI_TRANSFER_CONTROL_PROTOCOL;
+};
 
 extern EFI_GUID gEfiPeiTransferControlGuid;