diff --git a/EdkCompatibilityPkg/Foundation/Framework/Protocol/SmmCpuState/SmmCpuState.h b/EdkCompatibilityPkg/Foundation/Framework/Protocol/SmmCpuState/SmmCpuState.h
index a46bfa5564..9f262a52c0 100644
--- a/EdkCompatibilityPkg/Foundation/Framework/Protocol/SmmCpuState/SmmCpuState.h
+++ b/EdkCompatibilityPkg/Foundation/Framework/Protocol/SmmCpuState/SmmCpuState.h
@@ -34,6 +34,8 @@ Revision History
 #define EFI_SMM_CPU_SAVE_STATE_PROTOCOL_GUID  \
   { 0x21f302ad, 0x6e94, 0x471b, 0x84, 0xbc, 0xb1, 0x48, 0x0, 0x40, 0x3a, 0x1d }
 
+typedef struct _EFI_SMM_CPU_SAVE_STATE_PROTOCOL  EFI_SMM_CPU_SAVE_STATE_PROTOCOL;
+
 struct _EFI_SMM_CPU_SAVE_STATE_PROTOCOL {
   EFI_SMM_CPU_STATE                 **CpuSaveState;
 };