diff --git a/py/objmodule.c b/py/objmodule.c
index 8576bf305f..05ec26e481 100644
--- a/py/objmodule.c
+++ b/py/objmodule.c
@@ -189,6 +189,7 @@ STATIC const mp_rom_map_elem_t mp_builtin_module_table[] = {
     { MP_ROM_QSTR(MP_QSTR_uzlib), MP_ROM_PTR(&mp_module_uzlib) },
 #endif
 #if MICROPY_PY_UJSON
+    { MP_ROM_QSTR(MP_QSTR_json), MP_ROM_PTR(&mp_module_ujson) },
     { MP_ROM_QSTR(MP_QSTR_ujson), MP_ROM_PTR(&mp_module_ujson) },
 #endif
 #if MICROPY_PY_URE