diff --git a/src/process-tree-view.c b/src/process-tree-view.c
index 01be48b..956c709 100644
--- a/src/process-tree-view.c
+++ b/src/process-tree-view.c
@@ -744,7 +744,7 @@ xtm_process_tree_view_new (void)
 void
 xtm_process_tree_view_get_sort_column_id (XtmProcessTreeView *treeview, gint *sort_column_id, GtkSortType *sort_type)
 {
-	*sort_column_id = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (treeview->sort_column), "column-id"));
+	*sort_column_id = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (treeview->sort_column), "sort-column-id"));
 	*sort_type = gtk_tree_view_column_get_sort_order (treeview->sort_column);
 }
 
diff --git a/src/process-window.c b/src/process-window.c
index 743cf70..c6bb1bb 100644
--- a/src/process-window.c
+++ b/src/process-window.c
@@ -228,11 +228,11 @@ xtm_process_window_finalize (GObject *object)
 	if (GTK_IS_WINDOW (window->window))
 	{
 		gint width, height, handle_position;
-		guint sort_column_id;
+		gint sort_column_id;
 		GtkSortType sort_type;
 
 		gtk_window_get_size (GTK_WINDOW (window->window), &width, &height);
-		xtm_process_tree_view_get_sort_column_id (XTM_PROCESS_TREE_VIEW (window->treeview), (gint*)&sort_column_id, &sort_type);
+		xtm_process_tree_view_get_sort_column_id (XTM_PROCESS_TREE_VIEW (window->treeview), &sort_column_id, &sort_type);
 
 		handle_position = gtk_paned_get_position (GTK_PANED (window->vpaned));