diff --git a/templates/default/join.html.ep b/templates/default/join.html.ep
index d698dbb..73c1511 100644
--- a/templates/default/join.html.ep
+++ b/templates/default/join.html.ep
@@ -576,7 +576,12 @@
       <div class="modal-dialog">
         <div class="modal-content">
           <div class="modal-header">
-            <h4 class="modal-title"><%=l 'WIPE_ROOM_DATA' %></h4>
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">
+              &times;
+            </button>
+            <h4 class="modal-title">
+              <%=l 'WIPE_ROOM_DATA' %>
+            </h4>
           </div>
           <div class="modal-body">
             <p>