diff --git a/dev-scripts/run_tests.bat b/dev-scripts/run_tests.bat
index 0eed5c6..138926f 100644
--- a/dev-scripts/run_tests.bat
+++ b/dev-scripts/run_tests.bat
@@ -1,4 +1,4 @@
-@echo on
+@echo off
 setlocal
 
 REM Run command to get composer_dir
@@ -11,6 +11,10 @@ if "%composer_dir%"=="" (
   exit /b 1
 ) else (
   cd ..
+  set "script_dir=%~dp0"
+  set "work_dir=%script_dir%/.."
+  cd %work_dir%
+
   php -c php-win.ini %composer_dir% update
   php -c php-win.ini vendor/bin/phpunit tests --debug
 )