diff --git a/remo/base/templates/base_fd4.jinja b/remo/base/templates/base_fd4.jinja
index 8aa17a995..b8b434003 100644
--- a/remo/base/templates/base_fd4.jinja
+++ b/remo/base/templates/base_fd4.jinja
@@ -267,6 +267,9 @@
             <a href="#" class="close">&times;</a>
           </div>
         </div>
+        <div class="alert-box warning">
+            WARNING: Changes made to the site will be lost. <a href="https://discourse.mozilla-community.org/t/reps-portal-migration/14562">Click here for more information.</a>
+        </div>
       </div>
 
       {% block content %}