diff --git a/defaults/main.yml b/defaults/main.yml
index 896f5573..16a5e692 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -394,7 +394,7 @@ nova_ceph_client_uuid: 517a4663-3927-44bc-9ea7-4a90e1cd4c66
 nova_cinder_rbd_inuse: False
 
 # Used to determine if we need a Ceph client
-nova_rbd_inuse: "(nova_libvirt_images_rbd_pool is defined) or (nova_cinder_rbd_inuse | bool)"
+nova_rbd_inuse: "{{ (nova_libvirt_images_rbd_pool is defined) or (nova_cinder_rbd_inuse | bool) }}"
 
 ## General Nova configuration
 # If ``nova_osapi_compute_workers`` is unset the system will use half the number of available VCPUS to