diff --git a/py/nativeglue.c b/py/nativeglue.c
index 9c939c7ea8..3220996f95 100644
--- a/py/nativeglue.c
+++ b/py/nativeglue.c
@@ -48,14 +48,13 @@ mp_uint_t mp_convert_obj_to_native(mp_obj_t obj, mp_uint_t type) {
     switch (type & 3) {
         case MP_NATIVE_TYPE_OBJ: return (mp_uint_t)obj;
         case MP_NATIVE_TYPE_BOOL:
-        case MP_NATIVE_TYPE_INT: return mp_obj_get_int(obj);
+        case MP_NATIVE_TYPE_INT: return mp_obj_get_int_truncated(obj);
         case MP_NATIVE_TYPE_UINT: {
             mp_buffer_info_t bufinfo;
             if (mp_get_buffer(obj, &bufinfo, MP_BUFFER_RW)) {
                 return (mp_uint_t)bufinfo.buf;
             } else {
-                // TODO should be mp_obj_get_uint_truncated or something
-                return mp_obj_get_int(obj);
+                return mp_obj_get_int_truncated(obj);
             }
         }
         default: assert(0); return 0;