1 files changed, 1 insertions, 2 deletions
diff --git a/Modules/itertoolsmodule.c b/Modules/itertoolsmodule.c
index 9c210ea..1c9a173 100644
--- a/Modules/itertoolsmodule.c
+++ b/Modules/itertoolsmodule.c
@@ -636,8 +636,7 @@ tee_next(teeobject *to)
         link = teedataobject_jumplink(to->dataobj);
         if (link == NULL)
             return NULL;
-        Py_DECREF(to->dataobj);
-        to->dataobj = (teedataobject *)link;
+        Py_SETREF(to->dataobj, (teedataobject *)link);
         to->index = 0;
     }
     value = teedataobject_getitem(to->dataobj, to->index);