diff --git a/nova/files/ocata/nova-compute.conf.Debian b/nova/files/ocata/nova-compute.conf.Debian
index bb1af40..22ee1bc 100644
--- a/nova/files/ocata/nova-compute.conf.Debian
+++ b/nova/files/ocata/nova-compute.conf.Debian
@@ -5959,7 +5959,7 @@
 inject_key=True
 vif_driver=nova.virt.libvirt.vif.LibvirtGenericVIFDriver
 
-{%- if compute.get('ceph', {}).ephemeral is defined %}
+{%- if compute.get('ceph', {}).get('ephemeral', False) %}
 images_type=rbd
 images_rbd_pool={{ compute.ceph.rbd_pool }}
 images_rbd_ceph_conf=/etc/ceph/ceph.conf
@@ -5967,7 +5967,7 @@
 rbd_secret_uuid={{ compute.ceph.secret_uuid }}
 inject_password=false
 inject_key=false
-{%- elif compute.get('lvm', {}).ephemeral is defined %}
+{%- elif compute.get('lvm', {}).get('ephemeral', False) %}
 images_type=lvm
 images_volume_group={{ compute.lvm.images_volume_group }}
 {%- if compute.lvm.volume_clear is defined %}
diff --git a/nova/files/pike/nova-compute.conf.Debian b/nova/files/pike/nova-compute.conf.Debian
index bc912de..39a2133 100644
--- a/nova/files/pike/nova-compute.conf.Debian
+++ b/nova/files/pike/nova-compute.conf.Debian
@@ -5990,7 +5990,7 @@
 inject_key=True
 vif_driver=nova.virt.libvirt.vif.LibvirtGenericVIFDriver
 
-{%- if compute.get('ceph', {}).ephemeral is defined %}
+{%- if compute.get('ceph', {}).get('ephemeral', False) %}
 images_type=rbd
 images_rbd_pool={{ compute.ceph.rbd_pool }}
 images_rbd_ceph_conf=/etc/ceph/ceph.conf
@@ -5998,7 +5998,7 @@
 rbd_secret_uuid={{ compute.ceph.secret_uuid }}
 inject_password=false
 inject_key=false
-{%- elif compute.get('lvm', {}).ephemeral is defined %}
+{%- elif compute.get('lvm', {}).get('ephemeral', False) %}
 images_type=lvm
 images_volume_group={{ compute.lvm.images_volume_group }}
 {%- if compute.lvm.volume_clear is defined %}