diff --git a/buffet/error_codes.cc b/buffet/error_codes.cc
new file mode 100644
index 0000000..bf51efc
--- /dev/null
+++ b/buffet/error_codes.cc
@@ -0,0 +1,22 @@
+// Copyright 2014 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "buffet/error_codes.h"
+
+namespace buffet {
+namespace errors {
+
+namespace json {
+const char kDomain[] = "json_parser";
+const char kParseError[] = "json_parse_error";
+const char kObjectExpected[] = "json_object_expected";
+}  // namespace json
+
+namespace file_system {
+const char kDomain[] = "file_system";
+const char kFileReadError[] = "file_read_error";
+}  // namespace file_system
+
+}  // namespace errors
+}  // namespace buffet