diff --git a/Configuration.ui b/Configuration.ui
index 2bbbc0b7d..19f3765b3 100644
--- a/Configuration.ui
+++ b/Configuration.ui
@@ -1820,7 +1820,7 @@ for assessing propagation and system performance.</string>
        <item>
         <widget class="QGroupBox" name="groupBox_3">
          <property name="toolTip">
-          <string>See WSPR documentation Appendix C for details of how to determine these factors for your radio.</string>
+          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;See &amp;quot;Frequency Calibration&amp;quot; in the WSJT-X User Guide for details of how to determine these parameters for your radio.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
          </property>
          <property name="title">
           <string>Frequency Calibration</string>
@@ -2623,11 +2623,11 @@ soundcard changes</string>
  </connections>
  <buttongroups>
   <buttongroup name="TX_audio_source_button_group"/>
-  <buttongroup name="CAT_data_bits_button_group"/>
-  <buttongroup name="CAT_handshake_button_group"/>
-  <buttongroup name="TX_mode_button_group"/>
-  <buttongroup name="PTT_method_button_group"/>
-  <buttongroup name="CAT_stop_bits_button_group"/>
   <buttongroup name="split_mode_button_group"/>
+  <buttongroup name="PTT_method_button_group"/>
+  <buttongroup name="TX_mode_button_group"/>
+  <buttongroup name="CAT_handshake_button_group"/>
+  <buttongroup name="CAT_data_bits_button_group"/>
+  <buttongroup name="CAT_stop_bits_button_group"/>
  </buttongroups>
 </ui>