Merge branches/pep-0384.
diff --git a/Include/classobject.h b/Include/classobject.h
index b7eebe5..eeeb3e9 100644
--- a/Include/classobject.h
+++ b/Include/classobject.h
@@ -2,6 +2,7 @@
 
 /* Revealing some structures (not for general use) */
 
+#ifndef Py_LIMITED_API
 #ifndef Py_CLASSOBJECT_H
 #define Py_CLASSOBJECT_H
 #ifdef __cplusplus
@@ -54,3 +55,4 @@
 }
 #endif
 #endif /* !Py_CLASSOBJECT_H */
+#endif /* Py_LIMITED_API */