diff --git a/windows/ctmpf.bat b/windows/ctmpf.bat
index f729354..33ee2ef 100644
--- a/windows/ctmpf.bat
+++ b/windows/ctmpf.bat
@@ -1,8 +1,8 @@
 @ECHO off
 
 :: Start as administrator
-fltmc >nul 2>&1 || (
-    PowerShell Start -Verb RunAs '%0' 2> nul || (
+fltmc > NUL 2>&1 || (
+    PowerShell Start -Verb RunAs '%0' 2> NUL || (
         EXIT 1
     )
     EXIT 0
@@ -12,17 +12,17 @@ ECHO CTMPF :: Clean TeMPorary Files
 
 :: Empty the user's temp folder
 ECHO Suppression des fichiers dans %TEMP%...
-DEL /f /q %LOCALAPPDATA%\Temp\* 2> nul
-RMDIR /s /q "%TEMP%" 2> nul
+DEL /f /q %LOCALAPPDATA%\Temp\* 2> NUL
+RMDIR /s /q "%TEMP%" 2> NUL
 
 
 :: Empty the system's temp folder
 ECHO Suppression des fichiers dans %WINDIR%\Temp...
-RMDIR /s /q "%WINDIR%\Temp" 2> nul
+RMDIR /s /q "%WINDIR%\Temp" 2> NUL
 
 :: Empty the Prefetch folder
 ECHO Suppression des fichiers dans %WINDIR%\Prefetch...
-RMDIR /s /q "%WINDIR%\Prefetch" 2> nul
+RMDIR /s /q "%WINDIR%\Prefetch" 2> NUL
 
 :: Remove old Windows installation
 if exist "%SYSTEMDRIVE%\Windows.old" (
diff --git a/windows/fix_nvidia_wsl.bat b/windows/fix_nvidia_wsl.bat
index 466112f..e1270b2 100644
--- a/windows/fix_nvidia_wsl.bat
+++ b/windows/fix_nvidia_wsl.bat
@@ -1,8 +1,8 @@
 @ECHO off
 
 :: Start as administrator
-fltmc >nul 2>&1 || (
-    PowerShell Start -Verb RunAs '%0' 2> nul || (
+fltmc > NUL 2>&1 || (
+    PowerShell Start -Verb RunAs '%0' 2> NUL || (
         EXIT 1
     )
     EXIT 0
diff --git a/windows/update.bat b/windows/update.bat
index 4309db2..97bf940 100644
--- a/windows/update.bat
+++ b/windows/update.bat
@@ -1,8 +1,8 @@
 @ECHO off
 
 :: Start as administrator
-fltmc >nul 2>&1 || (
-    PowerShell Start -Verb RunAs '%0' 2> nul || (
+fltmc > NUL 2>&1 || (
+    PowerShell Start -Verb RunAs '%0' 2> NUL || (
         EXIT 1
     )
     EXIT 0
diff --git a/windows11.bat b/windows11.bat
index b983e81..d1d786c 100644
--- a/windows11.bat
+++ b/windows11.bat
@@ -1,8 +1,8 @@
 @ECHO off
 
 :: Start as administrator
-fltmc >nul 2>&1 || (
-    PowerShell Start -Verb RunAs '%0' 2> nul || (
+fltmc > NUL 2>&1 || (
+    PowerShell Start -Verb RunAs '%0' 2> NUL || (
         exit 1
     )
     exit 0
@@ -40,7 +40,7 @@ REG ADD "HKEY_CURRENT_USER\Keyboard Layout\toggle" /v "Language Hotkey" /t REG_S
 
 :: === Application downloads ==
 :: Auto accept ToT
-ECHO Y | winget list >nul
+ECHO Y | winget list > NUL
 
 winget install -he Mozilla.Firefox
 winget install -he 7zip.7zip