diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index a8c8b15..f251179 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1653,7 +1653,7 @@
 
 		/* Are slots allowed? */
 		nslots = PyTuple_GET_SIZE(slots);
-		if (nslots > 0 && base->tp_itemsize != 0 && !PyType_Check(base)) {
+		if (nslots > 0 && base->tp_itemsize != 0) {
 			/* for the special case of meta types, allow slots */
 			PyErr_Format(PyExc_TypeError,
 				     "nonempty __slots__ "