diff --git a/EdkCompatibilityPkg/Foundation/Framework/Guid/DataHubRecords/DataHubSubClassProcessor.h b/EdkCompatibilityPkg/Foundation/Framework/Guid/DataHubRecords/DataHubSubClassProcessor.h
index ef74742b88..76600c5383 100644
--- a/EdkCompatibilityPkg/Foundation/Framework/Guid/DataHubRecords/DataHubSubClassProcessor.h
+++ b/EdkCompatibilityPkg/Foundation/Framework/Guid/DataHubRecords/DataHubSubClassProcessor.h
@@ -333,8 +333,6 @@ typedef UINT8   EFI_PROCESSOR_CORE_COUNT_DATA;
 typedef UINT8   EFI_PROCESSOR_ENABLED_CORE_COUNT_DATA;
 typedef UINT8   EFI_PROCESSOR_THREAD_COUNT_DATA;
 
-typedef EFI_EXP_BASE10_DATA   EFI_PROCESSOR_MAX_FSB_FREQUENCY_DATA;
-
 typedef struct {
   UINT16  Reserved              :1;
   UINT16  Unknown               :1;