diff --git a/extent_ranges.h b/extent_ranges.h
index 2b5748f..b85ecbd 100644
--- a/extent_ranges.h
+++ b/extent_ranges.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_EXTENT_RANGES_H_
-#define CHROMEOS_PLATFORM_UPDATE_ENGINE_EXTENT_RANGES_H_
+#ifndef UPDATE_ENGINE_EXTENT_RANGES_H_
+#define UPDATE_ENGINE_EXTENT_RANGES_H_
 
 #include <map>
 #include <set>
@@ -70,4 +70,4 @@
 
 }  // namespace chromeos_update_engine
 
-#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_EXTENT_RANGES_H_
+#endif  // UPDATE_ENGINE_EXTENT_RANGES_H_