diff --git a/docs/user-guides/migrating-from-kube-lego.md b/docs/user-guides/migrating-from-kube-lego.md
index f34b368fd..8e03b965d 100644
--- a/docs/user-guides/migrating-from-kube-lego.md
+++ b/docs/user-guides/migrating-from-kube-lego.md
@@ -86,8 +86,10 @@ more relevant to cert-manager. For the rest of this guide, we'll assume you
 chose `letsencrypt-private-key`.
 
 Once done, we need to create this new resource in the `kube-system` namespace.
-This is where cert-manager looks for supporting resources for ClusterIssuers
-by default:
+By default, cert-manager stores supporting resources for ClusterIssuer's in the
+namespace that it is running in, and we used `kube-system` when deploying
+cert-manager above. You should change this if you have deployed cert-manager into
+a different namespace.
 
 ```bash
 $ kubectl create \