diff --git a/docs/04-certificate-authority.md b/docs/04-certificate-authority.md
index 7229356..13ac210 100644
--- a/docs/04-certificate-authority.md
+++ b/docs/04-certificate-authority.md
@@ -135,6 +135,7 @@ cat > ${instance}-csr.json <<EOF
   ]
 }
 EOF
+done
 
 EXTERNAL_IP=$(gcloud compute instances describe ${instance} \
   --format 'value(networkInterfaces[0].accessConfigs[0].natIP)')