diff --git a/roles/designate/vars/main.yml b/roles/designate/vars/main.yml
index b6e14bd..e6bfe9b 100644
--- a/roles/designate/vars/main.yml
+++ b/roles/designate/vars/main.yml
@@ -18,6 +18,8 @@
     tags: "{{ atmosphere_images | vexxhost.atmosphere.openstack_helm_image_tags('designate') }}"
   conf:
     designate:
+      DEFAULT:
+        log_config_append: null
       database:
         connection_recycle_time: 600
         max_overflow: 50
diff --git a/roles/nova/vars/main.yml b/roles/nova/vars/main.yml
index 71d980e..bd72f52 100644
--- a/roles/nova/vars/main.yml
+++ b/roles/nova/vars/main.yml
@@ -47,6 +47,7 @@
       enabled: "{{ atmosphere_ceph_enabled | default(true) | bool }}"
     nova:
       DEFAULT:
+        log_config_append: null
         allow_resize_to_same_host: true
         cpu_allocation_ratio: 4.5
         ram_allocation_ratio: 0.9