diff --git a/data/Dockerfiles/acme/obtain-certificate.sh b/data/Dockerfiles/acme/obtain-certificate.sh
index a4b11515..a924a0bc 100644
--- a/data/Dockerfiles/acme/obtain-certificate.sh
+++ b/data/Dockerfiles/acme/obtain-certificate.sh
@@ -39,6 +39,7 @@ if [[ "${LE_STAGING}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
   DIRECTORY_URL='--directory-url https://acme-staging-v02.api.letsencrypt.org/directory'
 elif [[ ! -z "${DIRECTORY_URL}" ]]; then
   log_f "Using custom directory URL ${DIRECTORY_URL}"
+  DIRECTORY_URL="--directory-url ${DIRECTORY_URL}"
 fi
 
 if [[ -f ${DOMAINS_FILE} && "$(cat ${DOMAINS_FILE})" ==  "${CERT_DOMAINS[*]}" ]]; then
diff --git a/docker-compose.yml b/docker-compose.yml
index 0cfcde37..99743924 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -342,7 +342,7 @@ services:
     acme-mailcow:
       depends_on:
         - nginx-mailcow
-      image: mailcow/acme:1.71
+      image: mailcow/acme:1.72
       dns:
         - ${IPV4_NETWORK:-172.22.1}.254
       environment: