diff --git a/preferencesdialog.ui b/preferencesdialog.ui
index 72c0103e..285684da 100644
--- a/preferencesdialog.ui
+++ b/preferencesdialog.ui
@@ -696,7 +696,7 @@ It allows detecting borderline events, and some the machine missed.
 This option must be enabled before import, otherwise a purge is required.</string>
            </property>
            <property name="title">
-            <string>Custom PRS1 Event Flagging</string>
+            <string>Custom User Event Flagging</string>
            </property>
            <property name="checkable">
             <bool>true</bool>
@@ -766,7 +766,7 @@ A value of 20% works well for detecting apneas. </string>
 &lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
 p, li { white-space: pre-wrap; }
 &lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans'; font-size:10pt; font-weight:400; font-style:italic;&quot;&gt;
-&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Custom flagging is an experimental method of detecting events missed by the machine.&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Custom flagging is an experimental method of detecting events missed by the machine. They are &lt;span style=&quot; text-decoration: underline;&quot;&gt;not&lt;/span&gt; included in AHI.&lt;/p&gt;
 &lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;/p&gt;
 &lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;** This only affects &lt;span style=&quot; text-decoration: underline;&quot;&gt;future&lt;/span&gt; imports **&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
               </property>