diff --git a/demos/gtk-demo/tree_store.c b/demos/gtk-demo/tree_store.c
index 65cecec..0bee4e7 100644
--- a/demos/gtk-demo/tree_store.c
+++ b/demos/gtk-demo/tree_store.c
@@ -147,20 +147,13 @@ add_columns (GtkTreeView *treeview)
 {
   GtkCellRenderer *renderer;
 
-  /* column for item_1 names */
-  renderer = gtk_cell_renderer_text_new ();
-  g_object_set (renderer, "xalign", 0.0, NULL);
-
+  renderer = gtk_cell_renderer_text_new (); g_object_set (renderer, "xalign", 0.0, NULL);
   gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview), -1,
       "Col 0", renderer, "text", COLUMN_0, NULL);
 
-  /* AA column */
-  renderer = gtk_cell_renderer_toggle_new ();
-  g_object_set (renderer, "xalign", 0.0, NULL);
-  g_object_set_data (G_OBJECT (renderer), "column", (int *)COLUMN_1);
-
+  renderer = gtk_cell_renderer_text_new (); g_object_set (renderer, "xalign", 0.0, NULL);
   gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview), -1,
-      "Col 1", renderer, "active", COLUMN_1, "visible", VISIBLE_COLUMN, "activatable", WORLD_COLUMN, NULL);
+      "Col 1", renderer, "active", COLUMN_1, NULL);
 }
 
 GtkWidget *