diff --git a/deevirt_schema/libvirt/dom/config.py b/deevirt_schema/libvirt/dom/config.py
index 4017ee9..d7c594e 100644
--- a/deevirt_schema/libvirt/dom/config.py
+++ b/deevirt_schema/libvirt/dom/config.py
@@ -20,7 +20,7 @@ class UnitEnum(str, Enum):
     GiB = "GiB"
     TiB = "TiB"
 
-class MetadataDeevirt(BaseXmlModel):
+class MetadataDeevirt(BaseXmlModel, ns="deevirt", nsmap={'deevirt': 'https://deevirt.fr/schema/1.0'}):
     company_id:UUID4 = element()
     datacenter_id:UUID4 = element()