aargh. Don't make last minute re-organisations before checkin!
diff --git a/Include/modsupport.h b/Include/modsupport.h
index 9b4d2b4..5471197 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -20,7 +20,7 @@
 #define PyArg_BuildValue		_PyArg_BuildValue_SizeT
 #define PyArg_VaBuildValue		_PyArg_VaBuildValue_SizeT
 #else
-#if HAVE_DECLSPEC_DLL
+#ifdef HAVE_DECLSPEC_DLL
 PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *, char *, ...);
 PyAPI_FUNC(int) _PyArg_ParseTuple_SizeT(PyObject *, char *, ...);
 PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywords_SizeT(PyObject *, PyObject *,