diff --git a/buffet/exported_object_manager.h b/buffet/exported_object_manager.h
index 14a0b1a..e1d8884 100644
--- a/buffet/exported_object_manager.h
+++ b/buffet/exported_object_manager.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 EXPORTED_OBJECT_MANAGER_H_
-#define EXPORTED_OBJECT_MANAGER_H_
+#ifndef BUFFET_EXPORTED_OBJECT_MANAGER_H_
+#define BUFFET_EXPORTED_OBJECT_MANAGER_H_
 
 #include <map>
 #include <string>
@@ -115,4 +115,4 @@
 
 }  //  namespace buffet
 
-#endif  // EXPORTED_OBJECT_MANAGER_H_
+#endif  // BUFFET_EXPORTED_OBJECT_MANAGER_H_