diff --git a/.github/actions/clean_up/action.yaml b/.github/actions/clean_up/action.yaml
index ba407ba4..72ee1dad 100644
--- a/.github/actions/clean_up/action.yaml
+++ b/.github/actions/clean_up/action.yaml
@@ -169,7 +169,7 @@ runs:
         echo "::group::delete PostgreSQL Flex resources"
         set -e
         stackit auth activate-service-account --service-account-key-path .svc_acc.json
-        for s in $(stackit --verbosity ${{ inputs.log_level }} --project-id ${{ inputs.project_id }} postgresflex instance list --output-format json | jq -r '.[] | select(.name | startswith("${{ inputs.tf_resource_prefix }}")) | .id'); do stackit --verbosity ${{ inputs.log_level }} -y --project-id ${{ inputs.project_id }} postgresflex instance delete $s --force; done
+        for s in $(stackit --verbosity ${{ inputs.log_level }} --project-id ${{ inputs.project_id }} postgresflex instance list --output-format json | jq -r '.[] | select(.name | startswith("${{ inputs.tf_resource_prefix }}")) | .id'); do stackit --verbosity ${{ inputs.log_level }} -y --project-id ${{ inputs.project_id }} postgresflex instance delete "$s" --force; done
         echo "::endgroup::"
       shell: bash