these builtins have to be initialized
diff --git a/Include/bltinmodule.h b/Include/bltinmodule.h
new file mode 100644
index 0000000..868c9e6
--- /dev/null
+++ b/Include/bltinmodule.h
@@ -0,0 +1,14 @@
+#ifndef Py_BLTINMODULE_H
+#define Py_BLTINMODULE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_DATA(PyTypeObject) PyFilter_Type;
+PyAPI_DATA(PyTypeObject) PyMap_Type;
+PyAPI_DATA(PyTypeObject) PyZip_Type;
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BLTINMODULE_H */