diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index 6792f98f2c..1f9b4302ab 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -1812,6 +1812,23 @@ Suspendisse feugiat quam quis dolor accumsan cursus. </property>
                             <property name="adjustment">adjustment1</property>
                           </object>
                         </child>
+                        <child>
+                          <object class="GtkVolumeButton">
+                            <property name="visible">True</property>
+                            <property name="orientation">vertical</property>
+                            <property name="valign">center</property>
+                            <property name="use-symbolic">True</property>
+                            <property name="value">.5</property>
+                          </object>
+                        </child>
+                        <child>
+                          <object class="GtkVolumeButton">
+                            <property name="orientation">horizontal</property>
+                            <property name="valign">center</property>
+                            <property name="use-symbolic">True</property>
+                            <property name="value">.5</property>
+                          </object>
+                        </child>
                       </object>
                       <packing>
                         <property name="left-attach">0</property>