diff --git a/defaults/main.yml b/defaults/main.yml
index e2d4b458..84fd7bb5 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -599,11 +599,10 @@ nova_api_os_compute_uwsgi_ini_overrides: {}
 nova_enabled_mdev_types: "{{ nova_enabled_vgpu_types | default({}) }}"
 
 # PCI devices passthrough to nova
-# For SR-IOV please use:
-#   nova_device_spec: '{ "physical_network": "<ml2 network name>", "devname": "<physical nic>" }'
-#   Example:
-#     nova_device_spec: '{ "physical_network": "physnet1", "devname": "p1p1" }'
-nova_device_spec: "{{ nova_pci_passthrough_whitelist | default({}) }}"
+# Example:
+# nova_device_spec:
+#   - '{ "physical_network": "physnet1", "devname": "p1p1" }'
+nova_device_spec: "{{ nova_pci_passthrough_whitelist | default([]) }}"
 
 # PCI alias,
 # Example:
diff --git a/templates/nova.conf.j2 b/templates/nova.conf.j2
index f5c838b5..1174b914 100644
--- a/templates/nova.conf.j2
+++ b/templates/nova.conf.j2
@@ -341,8 +341,14 @@ device_addresses = {{ (record.address is string) | ternary(record.address, recor
 {% if nova_device_spec or nova_pci_alias %}
 [pci]
 {% if nova_device_spec %}
-# White list of PCI devices available to VMs.
+# PCI devices available to VMs
+{% if nova_device_spec is mapping %}
 device_spec = {{ nova_device_spec }}
+{% else %}
+{% for item in nova_device_spec %}
+device_spec = {{ item }}
+{% endfor %}
+{% endif %}
 {% endif %}
 {% if nova_pci_alias %}
 # PCI Alias