diff --git a/Include/moduleobject.h b/Include/moduleobject.h
index e68d144c78f..dbbf581f97a 100644
--- a/Include/moduleobject.h
+++ b/Include/moduleobject.h
@@ -31,7 +31,7 @@ PyAPI_FUNC(struct PyModuleDef*) PyModule_GetDef(PyObject*);
 PyAPI_FUNC(void*) PyModule_GetState(PyObject*);
 
 PyAPI_FUNC(PyObject *) PyModuleDef_Init(struct PyModuleDef*);
-PyTypeObject PyModuleDef_Type;
+PyAPI_DATA(PyTypeObject) PyModuleDef_Type;
 
 typedef struct PyModuleDef_Base {
   PyObject_HEAD
diff --git a/PC/python3.def b/PC/python3.def
index 45fda3861e8..f016aab6cf4 100644
--- a/PC/python3.def
+++ b/PC/python3.def
@@ -330,6 +330,8 @@ EXPORTS
   PyModule_GetState=python35.PyModule_GetState
   PyModule_New=python35.PyModule_New
   PyModule_Type=python35.PyModule_Type DATA
+  PyModuleDef_Init=python35.PyModuleDef_Init
+  PyModuleDef_Type=python35.PyModuleDef_Type DATA
   PyNullImporter_Type=python35.PyNullImporter_Type DATA
   PyNumber_Absolute=python35.PyNumber_Absolute
   PyNumber_Add=python35.PyNumber_Add