diff --git a/emhttp/plugins/dynamix/CacheDevices.page b/emhttp/plugins/dynamix/CacheDevices.page
index 6ff3c8afd..fe96ff5ed 100644
--- a/emhttp/plugins/dynamix/CacheDevices.page
+++ b/emhttp/plugins/dynamix/CacheDevices.page
@@ -120,7 +120,7 @@ function addSubpoolPopup(poolname,currentsubpools) {
     buttons: {
     "_(Add)_": function() {
         subpool=$(this).find('select[name="subpool"]').val();
-        $(this).find('input[name="poolName"]').val(poolname + "~" + subpool);
+        $(this).find('input[name="poolName"]').val(poolname + '<?=$tilde?>' + subpool);
         $(this).find('form').submit();
         $(this).dialog('close');
       },