diff --git a/content/en/docs/concepts/overview/working-with-objects/namespaces.md b/content/en/docs/concepts/overview/working-with-objects/namespaces.md
index 5e3acc5123c..07e7dac7266 100644
--- a/content/en/docs/concepts/overview/working-with-objects/namespaces.md
+++ b/content/en/docs/concepts/overview/working-with-objects/namespaces.md
@@ -43,6 +43,10 @@ resources within the same namespace.
 Creation and deletion of namespaces are described in the [Admin Guide documentation
 for namespaces](/docs/admin/namespaces).
 
+{{< note >}}
+    Avoid creating namespace with prefix `kube-`, since it is reserved for Kubernetes system namespaces.
+{{< /note >}}
+
 ### Viewing namespaces
 
 You can list the current namespaces in a cluster using:
diff --git a/content/en/docs/tasks/administer-cluster/namespaces.md b/content/en/docs/tasks/administer-cluster/namespaces.md
index be7906e40f5..eabf58ff0b2 100644
--- a/content/en/docs/tasks/administer-cluster/namespaces.md
+++ b/content/en/docs/tasks/administer-cluster/namespaces.md
@@ -82,6 +82,10 @@ See the [design doc](https://git.k8s.io/community/contributors/design-proposals/
 
 ## Creating a new namespace
 
+{{< note >}}
+    Avoid creating namespace with prefix `kube-`, since it is reserved for Kubernetes system namespaces.
+{{< /note >}}
+
 1. Create a new YAML file called `my-namespace.yaml` with the contents:
 
     ```yaml