diff --git a/src/ui/playbacksettingspage.ui b/src/ui/playbacksettingspage.ui
index 0456cf31c..8afbd8fcc 100644
--- a/src/ui/playbacksettingspage.ui
+++ b/src/ui/playbacksettingspage.ui
@@ -277,6 +277,9 @@
       </item>
       <item row="3" column="0" colspan="2">
        <widget class="QCheckBox" name="mono_playback">
+        <property name="toolTip">
+         <string>Changing mono playback preference will be effective for the next playing songs</string>
+        </property>
         <property name="text">
          <string>Mono playback</string>
         </property>