diff --git a/shared-bindings/displayio/ParallelBus.c b/shared-bindings/displayio/ParallelBus.c
index ea1753f314..b3a876f903 100644
--- a/shared-bindings/displayio/ParallelBus.c
+++ b/shared-bindings/displayio/ParallelBus.c
@@ -71,7 +71,7 @@ STATIC mp_obj_t displayio_parallelbus_make_new(const mp_obj_type_t *type, size_t
         { MP_QSTR_chip_select, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED },
         { MP_QSTR_write, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED },
         { MP_QSTR_read, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED },
-        { MP_QSTR_reset, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = mp_const_none} },
+        { MP_QSTR_reset, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED },
     };
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);