diff --git a/demos/gtk-demo/main.ui b/demos/gtk-demo/main.ui
index c605609c78..cc652598ba 100644
--- a/demos/gtk-demo/main.ui
+++ b/demos/gtk-demo/main.ui
@@ -60,35 +60,31 @@
     <child>
       <object class="GtkBox">
         <child>
-          <object class="GtkFrame">
+          <object class="GtkScrolledWindow">
+            <property name="width-request">120</property>
+            <property name="hscrollbar-policy">never</property>
+            <property name="min-content-width">150</property>
             <child>
-              <object class="GtkScrolledWindow">
-                <property name="width-request">120</property>
-                <property name="hscrollbar-policy">never</property>
-                <property name="min-content-width">150</property>
+              <object class="GtkTreeView" id="treeview">
+                <property name="model">treestore</property>
+                <property name="headers-visible">0</property>
+                <child internal-child="selection">
+                  <object class="GtkTreeSelection" id="treeview-selection">
+                    <property name="mode">browse</property>
+                  </object>
+                </child>
                 <child>
-                  <object class="GtkTreeView" id="treeview">
-                    <property name="model">treestore</property>
-                    <property name="headers-visible">0</property>
-                    <child internal-child="selection">
-                      <object class="GtkTreeSelection" id="treeview-selection">
-                        <property name="mode">browse</property>
-                      </object>
+                  <object class="GtkTreeViewColumn">
+                    <child>
+                      <object class="GtkCellRendererText"/>
+                      <attributes>
+                        <attribute name="style">4</attribute>
+                        <attribute name="text">1</attribute>
+                      </attributes>
                     </child>
                     <child>
-                      <object class="GtkTreeViewColumn">
-                        <child>
-                          <object class="GtkCellRendererText"/>
-                          <attributes>
-                            <attribute name="style">4</attribute>
-                            <attribute name="text">1</attribute>
-                          </attributes>
-                        </child>
-                        <child>
-                          <object class="GtkCellRendererText">
-                            <property name="text">  </property>
-                          </object>
-                        </child>
+                      <object class="GtkCellRendererText">
+                        <property name="text">  </property>
                       </object>
                     </child>
                   </object>
@@ -97,6 +93,9 @@
             </child>
           </object>
         </child>
+        <child>
+          <object class="GtkSeparator"/>
+        </child>
         <child>
           <object class="GtkNotebook" id="notebook">
             <property name="scrollable">1</property>