diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index fdeb189..178f7b2 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -1945,7 +1945,8 @@ PyTypeObject PyFloat_Type = {
     PyObject_GenericGetAttr,                    /* tp_getattro */
     0,                                          /* tp_setattro */
     0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,   /* tp_flags */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+        _Py_TPFLAGS_MATCH_SELF,               /* tp_flags */
     float_new__doc__,                           /* tp_doc */
     0,                                          /* tp_traverse */
     0,                                          /* tp_clear */