diff --git a/helm-charts/understackdb/README.md b/helm-charts/understackdb/README.md
index 82327d0f3..bb8853ae2 100644
--- a/helm-charts/understackdb/README.md
+++ b/helm-charts/understackdb/README.md
@@ -36,7 +36,8 @@ Helm chart to deploy MariaDB Database instances for Understack
 | grants[0].table | string | `"*"` | list of tables that grant is for |
 | image | string | `"mariadb:11.0.3"` |  |
 | imagePullPolicy | string | `"IfNotPresent"` |  |
-| instanceName | string | mariadb | instanceName is the name of the database instance |
+| instanceName | string | `"mariadb"` | instanceName is the name of the database instance |
+| instanceNamespace | string | `"openstack"` | instanceNamespace is the namespace where the MariaDB will be created |
 | rootPasswordSecretKeyRef | object | name: mariadb, key: root-password, generate: false | rootPasswordSecretKeyRef is a reference to a Secret containing the root password |
 | rootPasswordSecretKeyRef.generate | bool | false | generate determines whether a password should be generated if it's missing |
 | rootPasswordSecretKeyRef.key | string | root-password | key is the key in the Secret containing the root password |
diff --git a/helm-charts/understackdb/templates/mariadb-instance.yaml b/helm-charts/understackdb/templates/mariadb-instance.yaml
index 9a485e8f2..fb1f231bc 100644
--- a/helm-charts/understackdb/templates/mariadb-instance.yaml
+++ b/helm-charts/understackdb/templates/mariadb-instance.yaml
@@ -3,6 +3,7 @@ apiVersion: k8s.mariadb.com/v1alpha1
 kind: MariaDB
 metadata:
   name: {{ .Values.instanceName }}
+  namespace: {{ .Values.instanceNamespace }}
 spec:
   rootPasswordSecretKeyRef:
     name: {{ .Values.rootPasswordSecretKeyRef.name }}
diff --git a/helm-charts/understackdb/values.yaml b/helm-charts/understackdb/values.yaml
index 58e5ec7ca..6ab2e226d 100644
--- a/helm-charts/understackdb/values.yaml
+++ b/helm-charts/understackdb/values.yaml
@@ -1,7 +1,8 @@
 # Default values for understackdb.
 # -- instanceName is the name of the database instance
-# @default -- mariadb
 instanceName: mariadb
+# -- instanceNamespace is the namespace where the MariaDB will be created
+instanceNamespace: openstack
 # -- rootPasswordSecretKeyRef is a reference to a Secret containing the root password
 # @default -- name: mariadb, key: root-password, generate: false
 rootPasswordSecretKeyRef: