diff --git a/kubernetes/cert-manager/README.md b/kubernetes/cert-manager/README.md
index 2257cfe..951bd73 100644
--- a/kubernetes/cert-manager/README.md
+++ b/kubernetes/cert-manager/README.md
@@ -53,7 +53,6 @@ mv cert-manager.yaml cert-manager-1.0.4.yaml
 
 # install cert-manager 
 
-kubectl create ns cert-manager
 kubectl apply --validate=false -f cert-manager-1.0.4.yaml
 ```
 
@@ -174,4 +173,4 @@ kubectl describe certificate example-app
 kubectl get secrets
 NAME                  TYPE                                  DATA   AGE
 example-app-tls       kubernetes.io/tls                     2      84m
-```
\ No newline at end of file
+```