diff --git a/.github/actions/npm-check-bundle/action.yml b/.github/actions/npm-check-bundle/action.yml
index 505f340de0..d638a18fb4 100644
--- a/.github/actions/npm-check-bundle/action.yml
+++ b/.github/actions/npm-check-bundle/action.yml
@@ -9,9 +9,12 @@ runs:
   using: "composite"
   steps:
     - name: npm check bundle
+      env: 
+        TAG_NPM: alpha
       shell: bash
       id: sha_out
       run: |
+        set -u;
         export ADF_VERSION=$(npm view @alfresco/adf-core@${TAG_NPM} version)
         echo "ADF_VERSION='${ADF_VERSION}'"
         ./scripts/travis/build/npm-check-bundles.sh -v ${ADF_VERSION}