1 files changed, 1 insertions, 1 deletions
diff --git a/py/modstruct.c b/py/modstruct.c
index 69c7279e37..ec86d4b9c2 100644
--- a/py/modstruct.c
+++ b/py/modstruct.c
@@ -220,7 +220,7 @@ STATIC mp_obj_t struct_pack(size_t n_args, const mp_obj_t *args) {
     byte *p = (byte *)vstr.buf;
     memset(p, 0, size);
     struct_pack_into_internal(args[0], p, n_args - 1, &args[1]);
-    return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
+    return mp_obj_new_bytes_from_vstr(&vstr);
 }
 MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(struct_pack_obj, 1, MP_OBJ_FUN_ARGS_MAX, struct_pack);