charts: namespaces make id optional
diff --git a/charts/namespaces/templates/namespace.yaml b/charts/namespaces/templates/namespace.yaml
index 3d1aa32..c7dfeb8 100644
--- a/charts/namespaces/templates/namespace.yaml
+++ b/charts/namespaces/templates/namespace.yaml
@@ -5,8 +5,10 @@
 kind: Namespace
 metadata:
   name: {{ $prefix }}{{ . }}
+  {{ if $id }}
   labels:
     pcloud-instance-id: {{ $id }}
+  {{ end }}
   annotations:
     helm.sh/resource-policy: keep
 ---