diff --git a/mainwindow.ui b/mainwindow.ui
index 136ad88..51b669d 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -202,6 +202,9 @@
                   <height>40</height>
                  </size>
                 </property>
+                <property name="toolTip">
+                 <string>Current Frequency</string>
+                </property>
                 <property name="frameShape">
                  <enum>QFrame::NoFrame</enum>
                 </property>