diff --git a/Modules/parsermodule.c b/Modules/parsermodule.c
index 0dcb50f..83165ba 100644
--- a/Modules/parsermodule.c
+++ b/Modules/parsermodule.c
@@ -715,7 +715,7 @@
             Py_XDECREF(elem);
             return (0);
         }
-        err = PyNode_AddChild(root, type, strn, *line_num);
+        err = PyNode_AddChild(root, type, strn, *line_num, 0);
         if (err == E_NOMEM) {
             PyMem_DEL(strn);
             return (node *) PyErr_NoMemory();