diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index 658569e..b18e371 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1574,7 +1574,8 @@
 PyDoc_STRVAR(Xmlparsetype__doc__, "XML parser");
 
 static PyMethodDef xmlparse_tp_methods[] = {
-    {"__dir__", xmlparse_dir, METH_NOARGS}
+    {"__dir__", xmlparse_dir, METH_NOARGS},
+    {NULL, NULL}    /* sentinel */
 };
 
 static PyTypeObject Xmlparsetype = {