diff --git a/proxy/nginx.conf b/proxy/nginx.conf
index 746fbc1..cfe2efe 100644
--- a/proxy/nginx.conf
+++ b/proxy/nginx.conf
@@ -36,6 +36,10 @@ http {
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     }
 
+    location = /demo/a {
+      proxy_pass http://backend_a/;
+    }
+
     location /service/b {
       proxy_pass http://backend_b/;
       proxy_set_header Host $host;