--- lib/Widgets/SourceList.vala	2016-08-13 14:26:49.170137434 +0200
+++ lib/Widgets/SourceList.vala.new	2016-08-13 14:26:41.794137738 +0200
@@ -1595,7 +1595,6 @@
             set_model (data_model);
 
             halign = valign = Gtk.Align.FILL;
-            expand = true;
 
             enable_search = false;
             headers_visible = false;