- Changed the m# format for PyArg_ParseTuple back to s#
- c2pstr has moved to a different include file
diff --git a/Mac/Modules/macosmodule.c b/Mac/Modules/macosmodule.c
index 90be55d..3cf11a0 100644
--- a/Mac/Modules/macosmodule.c
+++ b/Mac/Modules/macosmodule.c
@@ -117,7 +117,7 @@
 		PyErr_SetString(PyExc_ValueError, "Operation on closed file");
 		return NULL;
 	}
-	if (!PyArg_ParseTuple(args, "m#", &buffer, &size))
+	if (!PyArg_ParseTuple(args, "s#", &buffer, &size))
 		return NULL;
 	err = FSWrite(self->fRefNum, &size, buffer);
 	if (err) {