=== modified file 'softwarecenter/ui/gtk3/widgets/backforward.py'
--- softwarecenter/ui/gtk3/widgets/backforward.py	2012-05-30 18:39:55 +0000
+++ softwarecenter/ui/gtk3/widgets/backforward.py	2012-08-29 20:47:20 +0000
@@ -61,8 +61,11 @@
 
             context = self.left.get_style_context()
             context.add_class("backforward-left-button")
+            context.add_class(Gtk.STYLE_CLASS_LINKED)
+
             context = self.right.get_style_context()
             context.add_class("backforward-right-button")
+            context.add_class(Gtk.STYLE_CLASS_LINKED)
 
             self.set_button_atk_info_ltr()
         else: