diff --git a/sbcl-nginx.yml b/sbcl-nginx.yml
index 94c571a..3065b95 100644
--- a/sbcl-nginx.yml
+++ b/sbcl-nginx.yml
@@ -449,6 +449,8 @@ write_files:
     permissions: '0755'
     defer: True
     content: |
+      #!/bin/bash
+      # Necessary pihole ufw setup
       sudo ufw allow 80/tcp
       sudo ufw allow 53/tcp
       sudo ufw allow 53/udp