diff --git a/widgets/mainwindow.ui b/widgets/mainwindow.ui
index 6ec5589d1..1ba754202 100644
--- a/widgets/mainwindow.ui
+++ b/widgets/mainwindow.ui
@@ -833,6 +833,9 @@ When not checked you can view the calibration results.</string>
                     </item>
                     <item>
                      <widget class="QComboBox" name="respondComboBox">
+                      <property name="toolTip">
+                       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Select &lt;span style=&quot; font-weight:600;&quot;&gt;CQ: First&lt;/span&gt; to respond automatically to he first decoded replyto your CQ. &lt;/p&gt;&lt;p&gt;Select &lt;span style=&quot; font-weight:600;&quot;&gt;CQ: Max Pts&lt;/span&gt; to respond automatically to the reply yielding most points in the ARRL Digi-DX contest. &lt;/p&gt;&lt;p&gt;Select &lt;span style=&quot; font-weight:600;&quot;&gt;CQ: None&lt;/span&gt; to choose callers manually.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+                      </property>
                       <property name="currentText">
                        <string/>
                       </property>