diff --git a/payload_constants.h b/payload_constants.h
index 4a4ec6f..58e7572 100644
--- a/payload_constants.h
+++ b/payload_constants.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_PAYLOAD_CONSTANTS_H_
-#define CHROMEOS_PLATFORM_UPDATE_ENGINE_PAYLOAD_CONSTANTS_H_
+#ifndef UPDATE_ENGINE_PAYLOAD_CONSTANTS_H_
+#define UPDATE_ENGINE_PAYLOAD_CONSTANTS_H_
 
 #include <base/basictypes.h>
 
@@ -18,4 +18,4 @@
 
 };  // namespace chromeos_update_engine
 
-#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_PAYLOAD_CONSTANTS_H_
+#endif  // UPDATE_ENGINE_PAYLOAD_CONSTANTS_H_