diff --git a/UI/MailPartViewers/product.plist b/UI/MailPartViewers/product.plist
index 78cedf99d..3c371903b 100644
--- a/UI/MailPartViewers/product.plist
+++ b/UI/MailPartViewers/product.plist
@@ -1,5 +1,5 @@
 { /* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-  requires = ( MAIN, Mailer, Appointments );
+  requires = ( MAIN, CommonUI, Mailer, Appointments );
 
   publicResources = (
 );