diff --git a/py/builtin.h b/py/builtin.h
index 933776f..e49e839 100644
--- a/py/builtin.h
+++ b/py/builtin.h
@@ -1,6 +1,7 @@
 mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args);
 
 MP_DECLARE_CONST_FUN_OBJ(mp_builtin___build_class___obj);
+MP_DECLARE_CONST_FUN_OBJ(mp_builtin___import___obj);
 MP_DECLARE_CONST_FUN_OBJ(mp_builtin___repl_print___obj);
 MP_DECLARE_CONST_FUN_OBJ(mp_builtin_abs_obj);
 MP_DECLARE_CONST_FUN_OBJ(mp_builtin_all_obj);