diff --git a/molecule/ceph/group_vars/all/molecule.yml b/molecule/ceph/group_vars/all/molecule.yml
index 1a5f975..8446952 100644
--- a/molecule/ceph/group_vars/all/molecule.yml
+++ b/molecule/ceph/group_vars/all/molecule.yml
@@ -76,7 +76,7 @@
 coredns_helm_values:
   replicaCount: 1
 
-atmosphere_network_backend: "{{ lookup('env', 'OVN_ENABLED') | default('false') | bool | ternary('ovn', 'openvswitch') }}"
+atmosphere_network_backend: "{{ lookup('env', 'ATMOSPHERE_NETWORK_BACKEND') | default('openvswitch') }}"
 ovn_helm_values:
   conf:
     auto_bridge_add: