diff --git a/lib/issues_form_hook_listener.rb b/lib/issues_form_hook_listener.rb
index 4bdc8e8..3853fd1 100644
--- a/lib/issues_form_hook_listener.rb
+++ b/lib/issues_form_hook_listener.rb
@@ -47,7 +47,7 @@ class IssuesFormHookListener < Redmine::Hook::ViewListener
     vehicle = f.select :vehicles_id, vehicles, :selected => selected_vehicle, include_blank: true
     
     return "
-      <input autocomplete=\"off\" class=\"ui-autocomplete-input autocomplete\" size=\"10\" name=\"issue[customer_id]\" id=\"issue_customer_id\" type=\"text\">
+      <input autocomplete=\"on\" class=\"ui-autocomplete-input autocomplete\" size=\"10\" name=\"issue[customer_id]\" id=\"issue_customer_id\" type=\"text\">
       <script>
       //<![CDATA[
       observeAutocompleteField('issue_customer_id', '/auto_complete/customer')