diff --git a/lib/issues_form_hook_listener.rb b/lib/issues_form_hook_listener.rb
index a0b36f1..05f5cb2 100644
--- a/lib/issues_form_hook_listener.rb
+++ b/lib/issues_form_hook_listener.rb
@@ -13,7 +13,7 @@ class IssuesFormHookListener < Redmine::Hook::ViewListener
   # Load the javascript
   def view_layouts_base_html_head(context = {})
     js = javascript_include_tag 'application', :plugin => 'redmine_qbo'
-    js = javascript_include_tag 'autocomplete-rails', :plugin => 'redmine_qbo'
+    js += javascript_include_tag 'autocomplete-rails', :plugin => 'redmine_qbo'
     return js
   end