diff --git a/cmd_windows.bat b/cmd_windows.bat
index 787b4335..b0540bd8 100755
--- a/cmd_windows.bat
+++ b/cmd_windows.bat
@@ -21,6 +21,7 @@ set INSTALL_ENV_DIR=%cd%\installer_files\env
 set PYTHONNOUSERSITE=1
 set PYTHONPATH=
 set PYTHONHOME=
+set PYTHONUTF8=1
 set "CUDA_PATH=%INSTALL_ENV_DIR%"
 set "CUDA_HOME=%CUDA_PATH%"
 
diff --git a/start_windows.bat b/start_windows.bat
index dd096760..8da6986f 100755
--- a/start_windows.bat
+++ b/start_windows.bat
@@ -5,6 +5,7 @@ setlocal enabledelayedexpansion
 set PYTHONNOUSERSITE=1
 set PYTHONPATH=
 set PYTHONHOME=
+set PYTHONUTF8=1
 
 cd /D "%~dp0"