--- ./src/devhelp.ui.orig	2013-02-05 19:18:57.000000000 +0100
+++ ./src/devhelp.ui	2016-10-16 22:53:11.072654500 +0800
@@ -356,6 +356,8 @@
             </child>
           </object>
           <packing>
+            <property name="expand">True</property>
+            <property name="fill">True</property>
             <property name="position">1</property>
           </packing>
         </child>