diff --git a/src/html/menu/content/bookmarks/content.html b/src/html/menu/content/bookmarks/content.html
index 86455857..b1eb7ec1 100644
--- a/src/html/menu/content/bookmarks/content.html
+++ b/src/html/menu/content/bookmarks/content.html
@@ -82,6 +82,9 @@
         <button class="control-link-item-display-gutter-default button button-line" tabindex="-1" title="Reset to default"><span class="icon-replay"></span></button>
       </div>
     </div>
+    <div class="form-helper">
+      <p class="control-link-item-display-gutter-helper form-helper-item">Only available when Letter/Icon/Image and Name are shown.</p>
+    </div>
     <hr>
     <div class="form-wrap">
       <input id="control-link-item-display-direction-horizontal" class="control-link-item-display-direction-horizontal" type="radio" name="control-link-item-display-direction" value="horizontal" tabindex="-1">