diff --git a/synafpc.pas b/synafpc.pas
index 3bcc32e..b0c6fbd 100644
--- a/synafpc.pas
+++ b/synafpc.pas
@@ -69,7 +69,7 @@ uses
   {$IFDEF FPC}
    dynlibs,
   {$ELSE}
-   {$IFDEF DELPHI25_UP}
+   {$IFDEF DELPHIXE4_UP}
     {$IFNDEF NEXTGEN}
     System.AnsiStrings,
     {$ENDIF}