diff --git a/build.cmd b/build.cmd
index f18eab5..50c29b1 100644
--- a/build.cmd
+++ b/build.cmd
@@ -13,9 +13,9 @@ setlocal
 call 3rd_party\CEF\create.cmd %TARGET_MODE%
 endlocal
 
-mkdir build > NUL
-mkdir build\%TARGET_MODE% > NUL
-pushd build\%TARGET_MODE% > NUL
+mkdir build >NUL 2>&1
+mkdir build\%TARGET_MODE% >NUL 2>&1
+pushd build\%TARGET_MODE% >NUL 2>&1
   (%CMAKE% -G "Visual Studio 14 2015 Win64" -DCMAKE_BUILD_TYPE=%TARGET_MODE% -DSIADRIVE_INSTALL_FOLDER="%ROOT%dist\%TARGET_MODE%" ..\..) && (
     %CMAKE% --build . --config %TARGET_MODE%) && (
     %CMAKE% --build . --target install --config %TARGET_MODE%