diff --git a/PC/_msi.c b/PC/_msi.c
index 6c6f2f8..ec6c203 100644
--- a/PC/_msi.c
+++ b/PC/_msi.c
@@ -997,14 +997,27 @@
 
 static char msi_doc[] = "Documentation";
 
+
+static struct PyModuleDef _msimodule = {
+	PyModuleDef_HEAD_INIT,
+	"_msi",
+	msi_doc,
+	-1,
+	msi_methods,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
 PyMODINIT_FUNC
-init_msi(void)
+PyInit__msi(void)
 {
     PyObject *m;
 
-    m = Py_InitModule3("_msi", msi_methods, msi_doc);
+    m = PyModule_Create(&_msimodule);
     if (m == NULL)
-	return;
+	return NULL;
 
     PyModule_AddIntConstant(m, "MSIDBOPEN_CREATEDIRECT", (int)MSIDBOPEN_CREATEDIRECT);
     PyModule_AddIntConstant(m, "MSIDBOPEN_CREATE", (int)MSIDBOPEN_CREATE);
@@ -1050,6 +1063,7 @@
 
     MSIError = PyErr_NewException ("_msi.MSIError", NULL, NULL);
     if (!MSIError)
-	return;
+	return NULL;
     PyModule_AddObject(m, "MSIError", MSIError);
+    return NULL;
 }
diff --git a/PC/_subprocess.c b/PC/_subprocess.c
index a752950..c256ca3 100644
--- a/PC/_subprocess.c
+++ b/PC/_subprocess.c
@@ -541,12 +541,20 @@
 	}
 }
 
-#if PY_VERSION_HEX >= 0x02030000
+static struct PyModuleDef _subprocessmodule = {
+	PyModuleDef_HEAD_INIT,
+	"_subprocess",
+	NULL,
+	-1,
+	sp_functions,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
 PyMODINIT_FUNC
-#else
-DL_EXPORT(void)
-#endif
-init_subprocess()
+PyInit__subprocess()
 {
 	PyObject *d;
 	PyObject *m;
@@ -555,9 +563,9 @@
 	Py_TYPE(&sp_handle_type) = &PyType_Type;
 	sp_handle_as_number.nb_int = (unaryfunc) sp_handle_as_int;
 
-	m = Py_InitModule("_subprocess", sp_functions);
+	m = PyModule_Create(&_subprocessmodule);
 	if (m == NULL)
-		return;
+		return NULL;
 	d = PyModule_GetDict(m);
 
 	/* constants */
@@ -571,4 +579,5 @@
 	defint(d, "INFINITE", INFINITE);
 	defint(d, "WAIT_OBJECT_0", WAIT_OBJECT_0);
 	defint(d, "CREATE_NEW_CONSOLE", CREATE_NEW_CONSOLE);
+	return m;
 }
diff --git a/PC/msvcrtmodule.c b/PC/msvcrtmodule.c
index aeab3b6..225121f 100755
--- a/PC/msvcrtmodule.c
+++ b/PC/msvcrtmodule.c
@@ -358,13 +358,26 @@
 	{NULL,			NULL}
 };
 
+
+static struct PyModuleDef msvcrtmodule = {
+	PyModuleDef_HEAD_INIT,
+	"msvcrt",
+	NULL,
+	-1,
+	msvcrt_functions,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
 PyMODINIT_FUNC
-initmsvcrt(void)
+PyInit_msvcrt(void)
 {
 	PyObject *d;
-	PyObject *m = Py_InitModule("msvcrt", msvcrt_functions);
+	PyObject *m = PyModule_Create(&msvcrtmodule);
 	if (m == NULL)
-		return;
+		return NULL;
 	d = PyModule_GetDict(m);
 
 	/* constants for the locking() function's mode argument */
@@ -389,4 +402,5 @@
 	insertint(d, "CRTDBG_FILE_STDOUT", (int)_CRTDBG_FILE_STDOUT);
 	insertint(d, "CRTDBG_REPORT_FILE", (int)_CRTDBG_REPORT_FILE);
 #endif
+	return m;
 }
diff --git a/PC/winreg.c b/PC/winreg.c
index 8316f6c..d0397e9 100644
--- a/PC/winreg.c
+++ b/PC/winreg.c
@@ -1565,23 +1565,36 @@
 
 #define ADD_KEY(val) inskey(d, #val, val)
 
-PyMODINIT_FUNC initwinreg(void)
+
+static struct PyModuleDef winregmodule = {
+	PyModuleDef_HEAD_INIT,
+	"winreg",
+	module_doc,
+	-1,
+	winreg_methods,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
+PyMODINIT_FUNC PyInit_winreg(void)
 {
 	PyObject *m, *d;
-	m = Py_InitModule3("winreg", winreg_methods, module_doc);
+	m = PyModule_Create(&winregmodule);
 	if (m == NULL)
-		return;
+		return NULL;
 	d = PyModule_GetDict(m);
 	Py_TYPE(&PyHKEY_Type) = &PyType_Type;
 	PyHKEY_Type.tp_doc = PyHKEY_doc;
 	Py_INCREF(&PyHKEY_Type);
 	if (PyDict_SetItemString(d, "HKEYType",
 				 (PyObject *)&PyHKEY_Type) != 0)
-		return;
+		return NULL;
 	Py_INCREF(PyExc_WindowsError);
 	if (PyDict_SetItemString(d, "error",
 				 PyExc_WindowsError) != 0)
-		return;
+		return NULL;
 
 	/* Add the relevant constants */
 	ADD_KEY(HKEY_CLASSES_ROOT);
@@ -1640,6 +1653,7 @@
 	ADD_INT(REG_RESOURCE_LIST);
 	ADD_INT(REG_FULL_RESOURCE_DESCRIPTOR);
 	ADD_INT(REG_RESOURCE_REQUIREMENTS_LIST);
+	return m;
 }
 
 
diff --git a/PC/winsound.c b/PC/winsound.c
index 62e87ae..da5dea9 100644
--- a/PC/winsound.c
+++ b/PC/winsound.c
@@ -163,15 +163,26 @@
 
 #define ADD_DEFINE(tok) add_define(dict,#tok,tok)
 
+
+static struct PyModuleDef winsoundmodule = {
+	PyModuleDef_HEAD_INIT,
+	"winsound",
+	sound_module_doc,
+	-1,
+	sound_methods,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
 PyMODINIT_FUNC
-initwinsound(void)
+PyInit_winsound(void)
 {
 	PyObject *dict;
-	PyObject *module = Py_InitModule3("winsound",
-					  sound_methods,
-					  sound_module_doc);
+	PyObject *module = PyModule_Create(&winsoundmodule);
 	if (module == NULL)
-		return;
+		return NULL;
 	dict = PyModule_GetDict(module);
 
 	ADD_DEFINE(SND_ASYNC);
@@ -190,4 +201,5 @@
 	ADD_DEFINE(MB_ICONEXCLAMATION);
 	ADD_DEFINE(MB_ICONHAND);
 	ADD_DEFINE(MB_ICONQUESTION);
+	return module;
 }