@@ -3,7 +3,7 @@
BASEDIR=/letsencrypt
CONTACT_EMAIL="$EMAIL"
-if [[ -z "${STAGING}" ]]; then
+if [[ -z "${STAGING:-}" ]]; then
CA="https://acme-staging.api.letsencrypt.org/directory"
else
CA="https://acme-v01.api.letsencrypt.org/directory"