diff --git a/Objects/listobject.c b/Objects/listobject.c
index 2cb08d3..45b0951 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -421,7 +421,7 @@
 	if (n < 0)
 		n = 0;
 	size = a->ob_size * n;
-	if (size/a->ob_size != n)
+	if (n && size/n != a->ob_size)
 		return PyErr_NoMemory();
 	np = (PyListObject *) PyList_New(size);
 	if (np == NULL)