diff --git a/cert-manager/base/cert-manager-namespace.yml b/cert-manager/base/cert-manager-namespace.yml
deleted file mode 100644
index 705f8ea..0000000
--- a/cert-manager/base/cert-manager-namespace.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: cert-manager
-spec:
-  finalizers:
-  - kubernetes
diff --git a/cert-manager/base/kustomization.yaml b/cert-manager/base/kustomization.yaml
index 0fccc00..b15ce55 100644
--- a/cert-manager/base/kustomization.yaml
+++ b/cert-manager/base/kustomization.yaml
@@ -1,7 +1,7 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
-namespace: cert-manager
+namespace: kube-system
 resources:
 - https://github.com/cert-manager/cert-manager/releases/download/v1.16.1/cert-manager.yaml
 - cert-manager-issuer.yml