diff --git a/components/multithreadprocs/mtprocs.pas b/components/multithreadprocs/mtprocs.pas
index ec1a24102..768ed87aa 100644
--- a/components/multithreadprocs/mtprocs.pas
+++ b/components/multithreadprocs/mtprocs.pas
@@ -792,7 +792,11 @@ begin
         AThread.AddToList(FFirstActiveThread,mtptlPool);
         AThread.Item.FState:=mtptsActive;
         if NewThread then
+          {$IF defined(VER2_4_2) or defined(VER2_4_3)}
           AThread.Resume
+          {$ELSE}
+          AThread.Start
+          {$ENDIF}
         else
           RTLeventSetEvent(AThread.Item.fWaitForPool);
       end;