diff --git a/mainwindow.ui b/mainwindow.ui
index 510a64777..ec1e133de 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -1920,7 +1920,7 @@ list. The list can be maintained in Settings (F2).</string>
            </sizepolicy>
           </property>
           <property name="toolTip">
-           <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Noise level of 30dB recommended&lt;br/&gt;dB annotations:&lt;br/&gt;* = clipping occured&lt;br/&gt;- = signal too low&lt;br/&gt;+ = signal too high&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+           <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;30dB recommended when only noise present&lt;br/&gt;Green when good&lt;br/&gt;Red when clipping may occur&lt;br/&gt;Yellow when too low&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
           </property>
           <property name="frameShape">
            <enum>QFrame::Panel</enum>