diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index f6b7b3b5a7..d4e1d7b5dd 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -1004,7 +1004,7 @@ Once you've configured the application server, you must proxy requests to it by
 
 ```
 upstream application_server {
-  server 0.0.0.0:8080
+  server 0.0.0.0:8080;
 }
 
 server {