diff --git a/src/tools/msvc/install.bat b/src/tools/msvc/install.bat
index bed08f1..29c6c31 100644
--- a/src/tools/msvc/install.bat
+++ b/src/tools/msvc/install.bat
@@ -1,7 +1,7 @@
 @echo off
 REM src/tools/msvc/install.bat

-if NOT "%1"=="" GOTO RUN_INSTALL
+if NOT [%1]==[/?] GOTO RUN_INSTALL

 echo Invalid command line options.
 echo Usage: "install.bat <path>"
@@ -20,7 +20,7 @@ CALL bldenv.bat
 del bldenv.bat
 :nobuildenv

-perl install.pl "%1" %2
+perl install.pl %1 %2

 REM exit fix for pre-2003 shell especially if used on buildfarm
 if "%XP_EXIT_FIX%" == "yes" exit %ERRORLEVEL%