diff --git a/.github/workflows/build-2.x.yml b/.github/workflows/build-2.x.yml
index 1d0bf3c8..6e839195 100644
--- a/.github/workflows/build-2.x.yml
+++ b/.github/workflows/build-2.x.yml
@@ -85,7 +85,7 @@ jobs:
           echo "SCRIPT_DIR=$GITHUB_WORKSPACE/islandora_ci" >> $GITHUB_ENV
           echo "DRUPAL_DIR=/opt/drupal" >> $GITHUB_ENV
           echo "PHPUNIT_FILE=$GITHUB_WORKSPACE/build_dir/phpunit.xml" >> $GITHUB_ENV
-          echo "MINK_DRIVER_ARGS_WEBDRIVER='["firefox", null, "${{ secrets.SELENIUM_URL }}"]'" >> $GITHUB_ENV
+          echo "MINK_DRIVER_ARGS_WEBDRIVER='[\"firefox\", null, \"${{ secrets.SELENIUM_URL }}\"]'" >> $GITHUB_ENV
 
       - name: Cache Composer dependencies
         uses: actions/cache@v3