diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 19fdec3..6d192a7 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -97,3 +97,4 @@ boost_test(TYPE run SOURCES std_interop_test5.cpp)
 boost_test(TYPE run SOURCES std_interop_test6.cpp)
 boost_test(TYPE run SOURCES std_interop_test7.cpp)
 boost_test(TYPE run SOURCES std_interop_test8.cpp)
+boost_test(TYPE run SOURCES std_interop_test9.cpp)
diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index d0addf0..e2b0edc 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -107,3 +107,4 @@ run std_interop_test5.cpp
 run std_interop_test6.cpp ;
 run std_interop_test7.cpp ;
 run std_interop_test8.cpp ;
+run std_interop_test9.cpp ;
diff --git a/test/std_interop_test9.cpp b/test/std_interop_test9.cpp
new file mode 100644
index 0000000..6fae6b5
--- /dev/null
+++ b/test/std_interop_test9.cpp
@@ -0,0 +1,51 @@
+// Copyright 2021 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/system/error_code.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/config/pragma_message.hpp>
+#include <cerrno>
+
+#if !defined(BOOST_SYSTEM_HAS_SYSTEM_ERROR)
+
+BOOST_PRAGMA_MESSAGE( "BOOST_SYSTEM_HAS_SYSTEM_ERROR not defined, test will be skipped" )
+int main() {}
+
+#else
+
+#include <system_error>
+
+enum my_errc
+{
+    my_enoent = ENOENT
+};
+
+template<> struct boost::system::is_error_code_enum<my_errc>: std::true_type {};
+template<> struct std::is_error_code_enum<my_errc>: std::true_type {};
+
+boost::system::error_code make_error_code( my_errc e )
+{
+    return boost::system::error_code( e, boost::system::generic_category() );
+}
+
+int main()
+{
+    {
+        boost::system::error_code e1 = my_enoent;
+
+        BOOST_TEST( e1 == my_enoent );
+        BOOST_TEST_NOT( e1 != my_enoent );
+    }
+
+    {
+        std::error_code e1 = my_enoent;
+
+        BOOST_TEST( e1 == my_enoent );
+        BOOST_TEST_NOT( e1 != my_enoent );
+    }
+
+    return boost::report_errors();
+}
+
+#endif