diff --git a/docs/guides/self-hosting/linux/nginx.mdx b/docs/guides/self-hosting/linux/nginx.mdx
index 427521ea..1551e980 100644
--- a/docs/guides/self-hosting/linux/nginx.mdx
+++ b/docs/guides/self-hosting/linux/nginx.mdx
@@ -86,7 +86,7 @@ Load the new configuration by restarting NGINX. Check the logs to make sure it's
 
 ## Check the Firewall
 
-If you followed the non-TLS quickstart then you may have opened 8080,108080/tcp in your firewall. You can go ahead and replace those exceptions with 443/tcp because only NGINX needs to be reachable for zrok to function.
+If you followed the non-TLS quickstart then you may have opened 8080,18080/tcp in your firewall. You can go ahead and replace those exceptions with 443/tcp because only NGINX needs to be reachable for zrok to function.
 
 ## Update the zrok Frontend