Merge branches/pep-0384.
diff --git a/Include/pydebug.h b/Include/pydebug.h
index 0a31f5b..1cbb342 100644
--- a/Include/pydebug.h
+++ b/Include/pydebug.h
@@ -1,4 +1,4 @@
-
+#ifndef Py_LIMITED_API
 #ifndef Py_PYDEBUG_H
 #define Py_PYDEBUG_H
 #ifdef __cplusplus
@@ -31,3 +31,4 @@
 }
 #endif
 #endif /* !Py_PYDEBUG_H */
+#endif /* Py_LIMITED_API */