diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index a3905d84c70..2c1bf88db81 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -4959,6 +4959,9 @@ slot_tp_hash(PyObject *self)
         PyErr_Clear();
         h = PyLong_Type.tp_hash(res);
     }
+    /* -1 is reserved for errors. */
+    if (h == -1)
+        h = -2;
     Py_DECREF(res);
     return h;
 }