1 files changed, 3 insertions, 0 deletions
diff --git a/dev.bat b/dev.bat
index 303c804e..59e654d4 100644
--- a/dev.bat
+++ b/dev.bat
@@ -2,8 +2,11 @@
 set VENV=..\venv.mitmproxy
 
 virtualenv %VENV%
+if %errorlevel% neq 0 exit /b %errorlevel%
 call %VENV%\Scripts\activate.bat
+if %errorlevel% neq 0 exit /b %errorlevel%
 pip install --src .. -r requirements.txt
+if %errorlevel% neq 0 exit /b %errorlevel%
 
 echo.
 echo * Created virtualenv environment in %VENV%.