diff --git a/nova/templates/configmap-etc.yaml b/nova/templates/configmap-etc.yaml
index 90ba120ad5..a46959b16e 100644
--- a/nova/templates/configmap-etc.yaml
+++ b/nova/templates/configmap-etc.yaml
@@ -119,8 +119,8 @@ limitations under the License.
 {{- tuple "identity" "internal" "api" . | include "helm-toolkit.endpoints.keystone_endpoint_uri_lookup"| set .Values.conf.nova.placement "auth_url" | quote | trunc 0 -}}
 {{- end -}}
 
-{{- if empty .Values.conf.nova.placement.region_name -}}
-{{- set .Values.conf.nova.placement "region_name" .Values.endpoints.identity.auth.placement.region_name | quote | trunc 0 -}}
+{{- if empty .Values.conf.nova.placement.os_region_name -}}
+{{- set .Values.conf.nova.placement "os_region_name" .Values.endpoints.identity.auth.placement.region_name | quote | trunc 0 -}}
 {{- end -}}
 {{- if empty .Values.conf.nova.placement.project_name -}}
 {{- set .Values.conf.nova.placement "project_name" .Values.endpoints.identity.auth.placement.project_name | quote | trunc 0 -}}