diff --git a/tests/test-all.hpp b/tests/test-all.hpp
index 0e4c8c5..4b5e1a8 100644
--- a/tests/test-all.hpp
+++ b/tests/test-all.hpp
@@ -1,10 +1,12 @@
 /**
- * Copyright (C) 2013 Regents of the University of California.
+ * Copyright (C) 2014 Regents of the University of California.
  * See COPYING for copyright and distribution information.
  */
 
-#ifndef NDN_TEST_ALL_HPP
-#define NDN_TEST_ALL_HPP
+// This file is needed for experimental precompiled header support (gcc and clang)
+
+#ifndef NDN_TESTS_TEST_ALL_HPP
+#define NDN_TESTS_TEST_ALL_HPP
 
 #include "common.hpp"