diff --git a/samples/web_only.yml b/samples/web_only.yml
index 08e41712f..dc36c140d 100644
--- a/samples/web_only.yml
+++ b/samples/web_only.yml
@@ -32,6 +32,8 @@ env:
   LC_ALL: en_US.UTF-8
   LANG: en_US.UTF-8
   LANGUAGE: en_US.UTF-8
+  EMBER_CLI_PROD_ASSETS: 1
+
   # DISCOURSE_DEFAULT_LOCALE: en
 
   ## How many concurrent web requests are supported? Depends on memory and CPU cores.