diff --git a/certbot-nginx/certbot_nginx/configurator.py b/certbot-nginx/certbot_nginx/configurator.py
index 80df1c4f5..d77c5c2bc 100644
--- a/certbot-nginx/certbot_nginx/configurator.py
+++ b/certbot-nginx/certbot_nginx/configurator.py
@@ -238,8 +238,9 @@ class NginxConfigurator(common.Plugin):
             raise errors.MisconfigurationError(
                         """Cannot find a VirtualHost matching domain %s.
                            In order for Certbot to correctly perform the challenge
-                           please add a server_name directive to your nginx configuration.
-                           This configuration file can likely be found in /etc/nginx""" % (target_name))
+                           please add a corresponding server_name directive to your
+                           nginx configuration:
+                           https://nginx.org/en/docs/http/server_names.html""" % (target_name))
         else:
             # Note: if we are enhancing with ocsp, vhost should already be ssl.
             if not vhost.ssl: