diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 0fc0ad3..fd2ae67 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -5772,7 +5772,7 @@
         descr = _PyType_Lookup(type, p->name_strobj);
         if (descr == NULL) {
             if (ptr == (void**)&type->tp_iternext) {
-                specific = _PyObject_NextNotImplemented;
+                specific = (void *)_PyObject_NextNotImplemented;
             }
             continue;
         }
@@ -5819,7 +5819,7 @@
             /* We specifically allow __hash__ to be set to None
                to prevent inheritance of the default
                implementation from object.__hash__ */
-            specific = PyObject_HashNotImplemented;
+            specific = (void *)PyObject_HashNotImplemented;
         }
         else {
             use_generic = 1;
@@ -6034,7 +6034,7 @@
             continue;
         if (PyDict_GetItem(dict, p->name_strobj))
             continue;
-        if (*ptr == PyObject_HashNotImplemented) {
+        if (*ptr == (void *)PyObject_HashNotImplemented) {
             /* Classes may prevent the inheritance of the tp_hash
                slot by storing PyObject_HashNotImplemented in it. Make it
                visible as a None value for the __hash__ attribute. */