diff --git a/lang/c++/include/avro/Layout.hh b/lang/c++/include/avro/Layout.hh
index e5840d03ece..cbc05df4a6d 100644
--- a/lang/c++/include/avro/Layout.hh
+++ b/lang/c++/include/avro/Layout.hh
@@ -21,7 +21,7 @@
 
 #include "Config.hh"
 
-#include <cstddef>
+#include <stddef.h>
 
 /// \file Layout.hh
 ///