diff --git a/tests/SelfTest/helpers/parse_test_spec.cpp b/tests/SelfTest/helpers/parse_test_spec.cpp
index 2431d524..aa64404a 100644
--- a/tests/SelfTest/helpers/parse_test_spec.cpp
+++ b/tests/SelfTest/helpers/parse_test_spec.cpp
@@ -1,7 +1,7 @@
 
 //              Copyright Catch2 Authors
 // Distributed under the Boost Software License, Version 1.0.
-//   (See accompanying file LICENSE_1_0.txt or copy at
+//   (See accompanying file LICENSE.txt or copy at
 //        https://www.boost.org/LICENSE_1_0.txt)
 
 // SPDX-License-Identifier: BSL-1.0
diff --git a/tests/SelfTest/helpers/parse_test_spec.hpp b/tests/SelfTest/helpers/parse_test_spec.hpp
index 4cf2a241..39ee0713 100644
--- a/tests/SelfTest/helpers/parse_test_spec.hpp
+++ b/tests/SelfTest/helpers/parse_test_spec.hpp
@@ -1,11 +1,14 @@
 
 //              Copyright Catch2 Authors
 // Distributed under the Boost Software License, Version 1.0.
-//   (See accompanying file LICENSE_1_0.txt or copy at
+//   (See accompanying file LICENSE.txt or copy at
 //        https://www.boost.org/LICENSE_1_0.txt)
 
 // SPDX-License-Identifier: BSL-1.0
 
+#ifndef CATCH_TEST_HELPERS_PARSE_TEST_SPEC_HPP_INCLUDED
+#define CATCH_TEST_HELPERS_PARSE_TEST_SPEC_HPP_INCLUDED
+
 #include <catch2/catch_test_spec.hpp>
 
 #include <string>
@@ -13,3 +16,5 @@
 namespace Catch {
     TestSpec parseTestSpec( std::string const& arg );
 }
+
+#endif // CATCH_TEST_HELPERS_PARSE_TEST_SPEC_HPP_INCLUDED