diff --git a/roles/service/tasks/database.yml b/roles/service/tasks/database.yml
index c144f7a..3f4ba7a 100644
--- a/roles/service/tasks/database.yml
+++ b/roles/service/tasks/database.yml
@@ -54,7 +54,7 @@
     docker_image: "{{ db_container_image }}"
     reverse_proxy_type: none
     docker_mounts: "{{ db_container_mounts }}"
-    docker_published_ports: "{{ db_published_ports | default([]) }}"
+    docker_published_ports: "{{ db_published_ports }}"
     docker_env: "{{ db_container_env | default({}) }}"
     docker_additional_env: {}
     docker_networks: []
diff --git a/roles/service/tasks/init.yml b/roles/service/tasks/init.yml
index 517d424..749dc1a 100644
--- a/roles/service/tasks/init.yml
+++ b/roles/service/tasks/init.yml
@@ -34,6 +34,7 @@
     container_image: ''
     image_user: ''
     container_networks: []
+    db_published_ports: []
 
 - name: Add suffix to docker_service_name
   ansible.builtin.set_fact: