diff --git a/gtk/ui/gtkvolumebutton.ui b/gtk/ui/gtkvolumebutton.ui
index cf0db3ff86..3c658df0c5 100644
--- a/gtk/ui/gtkvolumebutton.ui
+++ b/gtk/ui/gtkvolumebutton.ui
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface domain="gtk40">
   <template class="GtkVolumeButton" parent="GtkScaleButton">
+    <property name="has-tooltip">1</property>
     <property name="adjustment">
       <object class="GtkAdjustment">
         <property name="upper">1</property>