diff --git a/cmd_windows.bat b/cmd_windows.bat
index b219cf6..82e1dac 100755
--- a/cmd_windows.bat
+++ b/cmd_windows.bat
@@ -11,7 +11,7 @@ set TMP=%cd%\installer_files
 set TEMP=%cd%\installer_files
 
 @rem deactivate existing conda envs as needed to avoid conflicts
-(conda deactivate && conda deactivate && conda deactivate) 2>null
+(conda deactivate && conda deactivate && conda deactivate) 2>nul
 
 @rem config
 set CONDA_ROOT_PREFIX=%cd%\installer_files\conda
diff --git a/start_windows.bat b/start_windows.bat
index 77ba93b..c75708a 100755
--- a/start_windows.bat
+++ b/start_windows.bat
@@ -18,7 +18,7 @@ set TMP=%cd%\installer_files
 set TEMP=%cd%\installer_files
 
 @rem deactivate existing conda envs as needed to avoid conflicts
-(conda deactivate && conda deactivate && conda deactivate) 2>null
+(conda deactivate && conda deactivate && conda deactivate) 2>nul
 
 @rem config
 set INSTALL_DIR=%cd%\installer_files
diff --git a/start_wsl.bat b/start_wsl.bat
index 26d2f8a..d7bacea 100755
--- a/start_wsl.bat
+++ b/start_wsl.bat
@@ -5,7 +5,7 @@ cd /D "%~dp0"
 set PATH=%PATH%;%SystemRoot%\system32
 
 @rem sed -i 's/\x0D$//' ./wsl.sh converts newlines to unix format in the wsl script
-call wsl -e bash -lic "sed -i 's/\x0D$//' ./wsl.sh; source ./wsl.sh $@"
+call wsl -e bash -lic "sed -i 's/\x0D$//' ./wsl.sh; source ./wsl.sh %*"
 
 :end
 pause
diff --git a/update_windows.bat b/update_windows.bat
index 6f01ee0..944ec32 100755
--- a/update_windows.bat
+++ b/update_windows.bat
@@ -11,7 +11,7 @@ set TMP=%cd%\installer_files
 set TEMP=%cd%\installer_files
 
 @rem deactivate existing conda envs as needed to avoid conflicts
-(conda deactivate && conda deactivate && conda deactivate) 2>null
+(conda deactivate && conda deactivate && conda deactivate) 2>nul
 
 @rem config
 set CONDA_ROOT_PREFIX=%cd%\installer_files\conda