diff --git a/gtk2_ardour/plugin_selector.cc b/gtk2_ardour/plugin_selector.cc
index 0fcc70331f..5d18b2cb59 100644
--- a/gtk2_ardour/plugin_selector.cc
+++ b/gtk2_ardour/plugin_selector.cc
@@ -108,7 +108,7 @@ PluginSelector::PluginSelector (PluginManager& mgr)
 
 		tvc = manage (new Gtk::TreeViewColumn (S_("Favorite|Fav"), *cell));
 		tvc->add_attribute (cell->property_state (), plugin_columns.favorite);
-		tvc->set_sizing (Gtk::TREE_VIEW_COLUMN_AUTOSIZE);
+		tvc->set_sizing (Gtk::TREE_VIEW_COLUMN_GROW_ONLY);
 		tvc->set_alignment (Gtk::ALIGN_CENTER);
 		tvc->set_expand (false);
 		tvc->set_resizable (false);