diff --git a/assets/javascripts/wizard-custom.js b/assets/javascripts/wizard-custom.js
index 8b30ad94..d0fef99a 100644
--- a/assets/javascripts/wizard-custom.js
+++ b/assets/javascripts/wizard-custom.js
@@ -2,6 +2,7 @@
 
 //= require discourse/app/mixins/singleton
 //= require discourse/app/mixins/upload
+//= require discourse/app/mixins/composer-upload
 
 //= require discourse/app/adapters/rest