diff --git a/Include/moduleobject.h b/Include/moduleobject.h
index 0f67da3..3d278af 100644
--- a/Include/moduleobject.h
+++ b/Include/moduleobject.h
@@ -12,7 +12,7 @@
 #define PyModule_Check(op) PyObject_TypeCheck(op, &PyModule_Type)
 #define PyModule_CheckExact(op) ((op)->ob_type == &PyModule_Type)
 
-PyAPI_FUNC(PyObject *) PyModule_New(char *);
+PyAPI_FUNC(PyObject *) PyModule_New(const char *);
 PyAPI_FUNC(PyObject *) PyModule_GetDict(PyObject *);
 PyAPI_FUNC(char *) PyModule_GetName(PyObject *);
 PyAPI_FUNC(char *) PyModule_GetFilename(PyObject *);