diff --git a/IntelFrameworkPkg/Include/Protocol/SmmSxDispatch.h b/IntelFrameworkPkg/Include/Protocol/SmmSxDispatch.h
index 0f54316b05..f75bb9c06b 100644
--- a/IntelFrameworkPkg/Include/Protocol/SmmSxDispatch.h
+++ b/IntelFrameworkPkg/Include/Protocol/SmmSxDispatch.h
@@ -133,7 +133,7 @@ EFI_STATUS
 **/
 typedef
 EFI_STATUS
-(EFIAPI *EFI_SMM_SX_UNREGISTER) (
+(EFIAPI *EFI_SMM_SX_UNREGISTER)(
   IN EFI_SMM_SX_DISPATCH_PROTOCOL           *This,
   IN  EFI_HANDLE                            DispatchHandle
   );