diff --git a/mainwindow.ui b/mainwindow.ui
index 04948d102..89b4469bd 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -1227,7 +1227,7 @@ QLabel[oob="true"] {
                    <item row="4" column="1" alignment="Qt::AlignHCenter|Qt::AlignVCenter">
                     <widget class="DoubleClickableRadioButton" name="txrb4">
                      <property name="toolTip">
-                      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Send this message in next Tx interval&lt;/p&gt;&lt;p&gt;Double-click to toggle between RRR and RR73 messages in Tx4 (not allowed for type 2 compound call holders)&lt;/p&gt;&lt;p&gt;RR73 messages should only be used when you are reasonably confident that no message repititions will be required&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+                      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Send this message in next Tx interval&lt;/p&gt;&lt;p&gt;Double-click to toggle between RRR and RR73 messages in Tx4 (not allowed for type 2 compound call holders)&lt;/p&gt;&lt;p&gt;RR73 messages should only be used when you are reasonably confident that no message repetitions will be required&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
                      </property>
                      <property name="text">
                       <string/>