1 files changed, 3 insertions, 1 deletions
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index c545b90..334be75 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -1712,7 +1712,9 @@ property_copy(PyObject *old, PyObject *get, PyObject *set, PyObject *del)
     if (new == NULL)
         return NULL;
 
-    Py_XSETREF(((propertyobject *) new)->prop_name, Py_XNewRef(pold->prop_name));
+    if (PyObject_TypeCheck((new), &PyProperty_Type)) {
+        Py_XSETREF(((propertyobject *) new)->prop_name, Py_XNewRef(pold->prop_name));
+    }
     return new;
 }