diff --git a/examples/application10/window.ui b/examples/application10/window.ui
index 1c9eeab326..97a502affc 100644
--- a/examples/application10/window.ui
+++ b/examples/application10/window.ui
@@ -55,6 +55,9 @@
             <child>
               <object class="GtkMenuButton" id="gears">
                 <property name="visible">True</property>
+                <style>
+                  <class name="image-button"/>
+                </style>
                 <child>
                   <object class="GtkImage" id="gears-icon">
                     <property name="visible">True</property>
diff --git a/examples/application8/window.ui b/examples/application8/window.ui
index 36a8ca4ced..674327d7a4 100644
--- a/examples/application8/window.ui
+++ b/examples/application8/window.ui
@@ -41,6 +41,9 @@
             <child>
               <object class="GtkMenuButton" id="gears">
                 <property name="visible">True</property>
+                <style>
+                  <class name="image-button"/>
+                </style>
                 <child>
                   <object class="GtkImage" id="gears-icon">
                     <property name="visible">True</property>
diff --git a/examples/application9/window.ui b/examples/application9/window.ui
index d3f54d1780..0713c36194 100644
--- a/examples/application9/window.ui
+++ b/examples/application9/window.ui
@@ -58,6 +58,9 @@
             <child>
               <object class="GtkMenuButton" id="gears">
                 <property name="visible">True</property>
+                <style>
+                  <class name="image-button"/>
+                </style>
                 <child>
                   <object class="GtkImage" id="gears-icon">
                     <property name="visible">True</property>