diff --git a/src/custom.htm b/src/custom.htm
index 02e86967b..01ddd4aed 100644
--- a/src/custom.htm
+++ b/src/custom.htm
@@ -136,14 +136,15 @@
     </div>
 
     <div class="row form-group">
-        <label class="col-xs-3">TX mode<i style="margin-left: 10px;" class="glyphicon glyphicon-info-sign"
-                aria-hidden="true" data-toggle="popover" data-trigger="hover" data-placement="right"
-                data-content="Tx mode settings for various EMS brands"></i></label>
+        <label class="col-xs-3">Tx mode<i style="margin-left: 10px;"
+                class="glyphicon glyphicon-exclamation-sign text-danger" aria-hidden="true" data-toggle="popover"
+                data-trigger="hover" data-placement="right"
+                data-content="Tx mode settings for sending data to the EMS bus"></i></label>
         <span class="col-xs-9 col-md-5">
             <select class="form-control input-sm" id="tx_mode">
                 <option selected="selected" value="1">1 (EMS generic)</option>
                 <option value="2">2 (EMS+/EMS2.0)</option>
-                <option value="3">3 (Junkers HT3)</option>
+                <option value="3">3 (Junkers Heatronics)</option>
             </select>
         </span>
     </div>