diff --git a/src/app/tape/tmainwindow.ui b/src/app/tape/tmainwindow.ui
index 661556f58..37b8520df 100644
--- a/src/app/tape/tmainwindow.ui
+++ b/src/app/tape/tmainwindow.ui
@@ -72,6 +72,9 @@
             <property name="enabled">
              <bool>false</bool>
             </property>
+            <property name="toolTip">
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Search measurements by term. &lt;/p&gt;&lt;p&gt;Prepend &amp;quot;/r/&amp;quot; to the front of the search string to search measurements by regex.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+            </property>
             <property name="placeholderText">
              <string>Search</string>
             </property>