Merge branches/pep-0384.
diff --git a/Include/datetime.h b/Include/datetime.h
index 2d71fce..db57a18 100644
--- a/Include/datetime.h
+++ b/Include/datetime.h
@@ -1,6 +1,6 @@
 /*  datetime.h
  */
-
+#ifndef Py_LIMITED_API
 #ifndef DATETIME_H
 #define DATETIME_H
 #ifdef __cplusplus
@@ -234,3 +234,4 @@
 }
 #endif
 #endif
+#endif /* !Py_LIMITED_API */