diff --git a/app/javascript/themes/vanilla/theme.yml b/app/javascript/themes/vanilla/theme.yml
index 120c4b669d5..0b262cc820d 100644
--- a/app/javascript/themes/vanilla/theme.yml
+++ b/app/javascript/themes/vanilla/theme.yml
@@ -1,5 +1,5 @@
 #  (REQUIRED) The location of the pack file inside `pack_directory`.
-#pack: application.js
+pack: application.js
 
 #  (OPTIONAL) The directory which contains the pack file.
 #  Defaults to the theme directory (`app/javascript/themes/[theme]`),