diff --git a/include/boost/pfr/detail/detectors.hpp b/include/boost/pfr/detail/detectors.hpp
index ca29e2e3..31cf5908 100644
--- a/include/boost/pfr/detail/detectors.hpp
+++ b/include/boost/pfr/detail/detectors.hpp
@@ -11,7 +11,8 @@
 
 namespace boost { namespace pfr { namespace detail {
 ///////////////////// `value` is true if Detector<Tleft, Tright> does not compile (SFINAE)
-	struct success{};
+    struct success{};
+
     template <template <class, class> class Detector, class Tleft, class Tright>
     struct not_appliable {
         static constexpr bool value = std::is_same<
diff --git a/test/common/test_tuple_sizes_on.cpp b/test/common/test_tuple_sizes_on.cpp
index 9efa9066..1f9c574f 100644
--- a/test/common/test_tuple_sizes_on.cpp
+++ b/test/common/test_tuple_sizes_on.cpp
@@ -58,8 +58,8 @@ void test_counts_on_multiple_chars_impl() {
     static_assert(flat_tuple_size_v<std::conditional_t<std::is_fundamental<T1>::value, T1*, void*> > == 1, "");
 #if !defined(__GNUC__) || __GNUC__ != 8
     // GCC-8 has big problems with this test:
-    //    error: ‘constexpr ubiq_constructor::operator Type&() const [with Type = test_counts_on_multiple_chars()::t2*]’,
-    //    declared using local type ‘test_counts_on_multiple_chars()::t2’, is used but never defined [-fpermissive]
+    //    error: 'constexpr ubiq_constructor::operator Type&() const [with Type = test_counts_on_multiple_chars()::t2*]',
+    //    declared using local type 'test_counts_on_multiple_chars()::t2', is used but never defined [-fpermissive]
     //
     // Fixed in GCC-9.
     static_assert(tuple_size_v<T1*> == 1, "");
diff --git a/test/flat/flat_motivating_example.cpp b/test/flat/flat_motivating_example.cpp
index edd326d7..953dec49 100644
--- a/test/flat/flat_motivating_example.cpp
+++ b/test/flat/flat_motivating_example.cpp
@@ -1,3 +1,8 @@
+// Copyright (c) 2016-2020 Antony Polukhin
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 // requires: C++14
 #include <iostream>
 #include "boost/pfr.hpp"
diff --git a/test/flat/flat_motivating_example2.cpp b/test/flat/flat_motivating_example2.cpp
index 9cb2683a..c01b5bc6 100644
--- a/test/flat/flat_motivating_example2.cpp
+++ b/test/flat/flat_motivating_example2.cpp
@@ -1,3 +1,8 @@
+// Copyright (c) 2016-2020 Antony Polukhin
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 #include <iostream>
 #include "boost/pfr.hpp"
 
diff --git a/test/precise/motivating_example.cpp b/test/precise/motivating_example.cpp
index 21589ab8..21c27ce4 100644
--- a/test/precise/motivating_example.cpp
+++ b/test/precise/motivating_example.cpp
@@ -1,3 +1,8 @@
+// Copyright (c) 2016-2020 Antony Polukhin
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 // requires: C++14
 #include <iostream>
 #include "boost/pfr/precise.hpp"
diff --git a/test/precise/motivating_example0.cpp b/test/precise/motivating_example0.cpp
index bac23650..3b0969f5 100644
--- a/test/precise/motivating_example0.cpp
+++ b/test/precise/motivating_example0.cpp
@@ -1,3 +1,8 @@
+// Copyright (c) 2016-2020 Antony Polukhin
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 #include <iostream>
 #include <string>
 #include "boost/pfr/precise.hpp"
diff --git a/test/precise/motivating_example2.cpp b/test/precise/motivating_example2.cpp
index 9b20ef37..10028159 100644
--- a/test/precise/motivating_example2.cpp
+++ b/test/precise/motivating_example2.cpp
@@ -1,3 +1,8 @@
+// Copyright (c) 2016-2020 Antony Polukhin
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 #include <iostream>
 #include "boost/pfr/precise.hpp"