diff --git a/include/tpax/tpax.h b/include/tpax/tpax.h
index 89c3bfc..9dbc73a 100644
--- a/include/tpax/tpax.h
+++ b/include/tpax/tpax.h
@@ -162,11 +162,11 @@ tpax_api int  tpax_util_path_copy           (char *, const char *, size_t, uint3
 tpax_api int  tpax_util_stat_compare        (const struct stat *, const struct stat *);
 
 /* utility api */
-tpax_api int  tpax_main                 (char **, char **,
-                                         const struct tpax_fd_ctx *);
-/* error trace api */
-tpax_api int  tpax_output_error_record  (const struct tpax_driver_ctx *, const struct tpax_error_info *);
-tpax_api int  tpax_output_error_vector  (const struct tpax_driver_ctx *);
+tpax_api int  tpax_main                     (char **, char **,
+                                             const struct tpax_fd_ctx *);
+
+tpax_api int  tpax_output_error_vector      (const struct tpax_driver_ctx *);
+tpax_api int  tpax_output_error_record      (const struct tpax_driver_ctx *, const struct tpax_error_info *);
 
 /* low-level api */
 tpax_api int  tpax_init_ustar_header    (const struct tpax_driver_ctx *, const char *, const struct stat *,