diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index c0392686..fde91243 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -63,7 +63,7 @@ jobs:
       run: composer install --prefer-dist -n
 
     - name: build coveralls coverage
-      run: php -m xdebug.mode=coverage vendor/bin/phpunit tests
+      run: php -d xdebug.mode=coverage vendor/bin/phpunit tests
 
     - name: Coveralls
       run: vendor/bin/php-coveralls  || true