diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index 37b5a1f..222f362 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -554,7 +554,7 @@
 	(binaryfunc)tupleconcat,		/* sq_concat */
 	(ssizeargfunc)tuplerepeat,		/* sq_repeat */
 	(ssizeargfunc)tupleitem,		/* sq_item */
-	(ssizessizeargfunc)tupleslice,		/* sq_slice */
+	0,					/* sq_slice */
 	0,					/* sq_ass_item */
 	0,					/* sq_ass_slice */
 	(objobjproc)tuplecontains,		/* sq_contains */