diff --git a/MdePkg/Include/Protocol/DebugSupport.h b/MdePkg/Include/Protocol/DebugSupport.h
index 3203f79dd0..0eb4eee7b3 100644
--- a/MdePkg/Include/Protocol/DebugSupport.h
+++ b/MdePkg/Include/Protocol/DebugSupport.h
@@ -573,7 +573,7 @@ EFI_STATUS
     
   @param  This                  A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
   @param  ProcessorIndex        Specifies which processor the callback function applies to.
-  @param  PeriodicCallback      A pointer to a function of type EXCEPTION_CALLBACK that is called
+  @param  ExceptionCallback     A pointer to a function of type EXCEPTION_CALLBACK that is called
                                 when the processor exception specified by ExceptionType occurs.  
   @param  ExceptionType         Specifies which processor exception to hook.