diff --git a/docs/04-certificate-authority.md b/docs/04-certificate-authority.md
index 689d618..5a87e2b 100644
--- a/docs/04-certificate-authority.md
+++ b/docs/04-certificate-authority.md
@@ -171,6 +171,7 @@ cat > kube-controller-manager-csr.json <<EOF
     }
   ]
 }
+EOF
 ```
 ```
 cfssl gencert \