diff --git a/Python/pystate.c b/Python/pystate.c
index 1623bab..e7c085d 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -308,6 +308,8 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
     Py_CLEAR(interp->importlib);
     Py_CLEAR(interp->import_func);
     Py_CLEAR(interp->dict);
+    Py_CLEAR(interp->map_abc);
+    Py_CLEAR(interp->seq_abc);
 #ifdef HAVE_FORK
     Py_CLEAR(interp->before_forkers);
     Py_CLEAR(interp->after_forkers_parent);