diff --git a/certbot-nginx/certbot_nginx/configurator.py b/certbot-nginx/certbot_nginx/configurator.py
index 225702251..b36f638ab 100644
--- a/certbot-nginx/certbot_nginx/configurator.py
+++ b/certbot-nginx/certbot_nginx/configurator.py
@@ -820,7 +820,7 @@ class NginxConfigurator(common.Plugin):
             self.restart()
 
 
-def nginx_restart(nginx_ctl, nginx_conf="/etc/nginx.conf"):
+def nginx_restart(nginx_ctl, nginx_conf):
     """Restarts the Nginx Server.
 
     .. todo:: Nginx restart is fatal if the configuration references