diff --git a/src/pref.c b/src/pref.c
index 9c5e07d..6c0e13d 100644
--- a/src/pref.c
+++ b/src/pref.c
@@ -271,7 +271,7 @@ static void up_dict(GtkWidget *button) {
 			gtk_list_store_swap(GTK_LIST_STORE(model), &iter, &tmpiter);
 		}
 	}
-	g_free(treepath);
+	gtk_tree_path_free(treepath);
 }