diff --git a/lib/zin/wg/thinkradio/v1.php b/lib/zin/wg/thinkradio/v1.php
index 87c2462ff3..9412fafe6d 100644
--- a/lib/zin/wg/thinkradio/v1.php
+++ b/lib/zin/wg/thinkradio/v1.php
@@ -145,7 +145,7 @@ class thinkRadio extends thinkQuestion
                     icon
                     (
                         setClass('mt-9 text-gray-400 cursor-pointer ml-1 text-base pt-0.5'),
-                        toggle::tooltip(array('placement' => 'top', 'title' => $lang->thinkstep->tips->setOption, 'width' => '220px', 'className' => 'bg-white text-gray border border-gray-300')),
+                        toggle::tooltip(array('placement' => 'top', 'title' => $lang->thinkstep->tips->setOption, 'width' => '220px', 'className' => 'text-gray border border-gray-300', 'type' => 'white')),
                         'help'
                     )
                 ),