diff --git a/components/lazutils/unixlazfileutils.inc b/components/lazutils/unixlazfileutils.inc
index 68949ebe89..ee2f821830 100644
--- a/components/lazutils/unixlazfileutils.inc
+++ b/components/lazutils/unixlazfileutils.inc
@@ -7,7 +7,7 @@ end;
 
 function FileOpenUTF8(Const FileName : string; Mode : Integer) : THandle;
 begin
-  Result := SysUtils.FileOpen(FileName, Mode);
+  Result := SysUtils.FileOpen(UTF8ToSys(FileName), Mode);
 end;
 
 function FileCreateUTF8(Const FileName : string) : THandle;