diff --git a/.github/workflows/openvidu-ce-test.yml b/.github/workflows/openvidu-ce-test.yml
index 6773268b..d4431de2 100644
--- a/.github/workflows/openvidu-ce-test.yml
+++ b/.github/workflows/openvidu-ce-test.yml
@@ -36,15 +36,15 @@ on:
       CHROME_VERSION:
         description: "Version of Chrome to use. Must be a valid image tag from https://hub.docker.com/r/selenium/standalone-chrome/tags"
         required: true
-        default: latest
+        default: "latest"
       FIREFOX_VERSION:
         description: "Version of Firefox to use. Must be a valid image tag from https://hub.docker.com/r/selenium/standalone-firefox/tags"
         required: true
-        default: latest
+        default: "latest"
       EDGE_VERSION:
         description: "Version of Edge to use. Must be a valid image tag from https://hub.docker.com/r/selenium/standalone-opera/tags"
         required: true
-        default: latest
+        default: "latest"
 jobs:
   main:
     runs-on: ubuntu-latest
diff --git a/ci-scripts/commons.sh b/ci-scripts/commons.sh
index 235ed704..3d6a45a5 100755
--- a/ci-scripts/commons.sh
+++ b/ci-scripts/commons.sh
@@ -354,7 +354,7 @@ if [[ "${PREPARE_TEST_ENVIRONMENT}" == true ]]; then
     sudo curl --location https://raw.githubusercontent.com/OpenVidu/openvidu/master/openvidu-test-e2e/docker/my-custom-layout/index.html --create-dirs --output /opt/openvidu/test-layouts/layout1/index.html
 
     # Open permissions for /opt/openvidu folder
-    chmod -R 777 /opt/openvidu
+    sudo chmod -R 777 /opt/openvidu
 
     # Pull browser images
     # Pull chrome image if env variable CHROME_VERSION is set