diff --git a/IntelFrameworkPkg/Include/Framework/SmmCis.h b/IntelFrameworkPkg/Include/Framework/SmmCis.h
index 6021802969..04788302ec 100644
--- a/IntelFrameworkPkg/Include/Framework/SmmCis.h
+++ b/IntelFrameworkPkg/Include/Framework/SmmCis.h
@@ -23,7 +23,6 @@
 #include <Protocol/SmmCpuIo.h>
 
 typedef struct _EFI_SMM_SYSTEM_TABLE      EFI_SMM_SYSTEM_TABLE;
-typedef struct _EFI_SMM_CPU_IO_INTERFACE  EFI_SMM_CPU_IO_INTERFACE;
 
 //
 // SMM Base specification constant and types