diff --git a/tools/chmmaker/unit1.pas b/tools/chmmaker/unit1.pas
index e182fdefba..27cca22dfc 100644
--- a/tools/chmmaker/unit1.pas
+++ b/tools/chmmaker/unit1.pas
@@ -7,7 +7,7 @@ interface
 uses
   Classes, SysUtils, types, chmsitemap, chmfilewriter,
   Forms, Controls, Graphics, Dialogs, StdCtrls, ComCtrls, Menus, ExtCtrls, EditBtn,
-  LazFileUtils;
+  LazFileUtils, UTF8Process;
 
 type
 
@@ -245,7 +245,7 @@ procedure TCHMForm.CompileViewBtnClick(Sender: TObject);
 var
   LHelpName: String;
   LHelpConn: TLHelpConnection;
-  Proc: TProcess;
+  Proc: TProcessUTF8;
   ext: String;
 begin
   if ChmFileNameEdit.FileName = '' then
@@ -267,7 +267,7 @@ begin
         MessageDlg('lazbuild coul not be found.', mtError, [mbCancel], 0);
         Exit;
       end;
-      Proc := TProcess.Create(Self);
+      Proc := TProcessUTF8.Create(Self);
       Proc.CommandLine := '../../../lazbuild ./lhelp.lpi';
       SetCurrentDir('../../components/chmhelp/lhelp/');
       Proc.Options := [poWaitOnExit];