diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index f87b059..aafb2a0 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -177,10 +177,10 @@
 PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithFilenameObject(
 	PyObject *, PyObject *);
 PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithFilename(PyObject *, const char *);
-#ifdef Py_WIN_WIDE_FILENAMES
+#ifdef MS_WINDOWS
 PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithUnicodeFilename(
 	PyObject *, const Py_UNICODE *);
-#endif /* Py_WIN_WIDE_FILENAMES */
+#endif /* MS_WINDOWS */
 
 PyAPI_FUNC(PyObject *) PyErr_Format(PyObject *, const char *, ...);
 
@@ -189,19 +189,15 @@
 	int, const char *);
 PyAPI_FUNC(PyObject *) PyErr_SetFromWindowsErrWithFilename(
 	int, const char *);
-#ifdef Py_WIN_WIDE_FILENAMES
 PyAPI_FUNC(PyObject *) PyErr_SetFromWindowsErrWithUnicodeFilename(
 	int, const Py_UNICODE *);
-#endif /* Py_WIN_WIDE_FILENAMES */
 PyAPI_FUNC(PyObject *) PyErr_SetFromWindowsErr(int);
 PyAPI_FUNC(PyObject *) PyErr_SetExcFromWindowsErrWithFilenameObject(
 	PyObject *,int, PyObject *);
 PyAPI_FUNC(PyObject *) PyErr_SetExcFromWindowsErrWithFilename(
 	PyObject *,int, const char *);
-#ifdef Py_WIN_WIDE_FILENAMES
 PyAPI_FUNC(PyObject *) PyErr_SetExcFromWindowsErrWithUnicodeFilename(
 	PyObject *,int, const Py_UNICODE *);
-#endif /* Py_WIN_WIDE_FILENAMES */
 PyAPI_FUNC(PyObject *) PyErr_SetExcFromWindowsErr(PyObject *, int);
 #endif /* MS_WINDOWS */