diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index af12769..eb6ceef 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1787,6 +1787,7 @@
 	(readbufferproc)array_buffer_getreadbuf,
 	(writebufferproc)array_buffer_getwritebuf,
 	(segcountproc)array_buffer_getsegcount,
+	NULL,
 };
 
 static PyObject *