diff --git a/mock_supplicant_bss_proxy.h b/mock_supplicant_bss_proxy.h
index 0de038b..67b31f5 100644
--- a/mock_supplicant_bss_proxy.h
+++ b/mock_supplicant_bss_proxy.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 MOCK_SUPPLICANT_BSS_PROXY_H_
-#define MOCK_SUPPLICANT_BSS_PROXY_H_
+#ifndef SHILL_MOCK_SUPPLICANT_BSS_PROXY_H_
+#define SHILL_MOCK_SUPPLICANT_BSS_PROXY_H_
 
 #include <base/basictypes.h>
 #include <gmock/gmock.h>
@@ -25,4 +25,4 @@
 
 }  // namespace shill
 
-#endif  // MOCK_SUPPLICANT_BSS_PROXY_H_
+#endif  // SHILL_MOCK_SUPPLICANT_BSS_PROXY_H_