diff --git a/include/boost/system/errc.hpp b/include/boost/system/errc.hpp
index f9d1bcb..ba70e26 100644
--- a/include/boost/system/errc.hpp
+++ b/include/boost/system/errc.hpp
@@ -14,6 +14,7 @@
 #include <boost/system/detail/error_code.hpp>
 #include <boost/system/detail/error_condition.hpp>
 #include <boost/system/detail/generic_category.hpp>
+#include <boost/system/detail/error_category_impl.hpp>
 #include <boost/system/detail/config.hpp>
 #include <boost/config.hpp>
 
diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index fe6056a..996813a 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -77,6 +77,7 @@ run std_single_instance_test.cpp std_single_instance_lib1 std_single_instance_li
 run is_error_code_enum_test.cpp ;
 run is_error_condition_enum_test.cpp ;
 run errc_test.cpp ;
+run errc_test2.cpp ;
 run error_category_test2.cpp ;
 run error_condition_test.cpp ;
 run error_condition_test2.cpp ;
diff --git a/test/errc_test2.cpp b/test/errc_test2.cpp
new file mode 100644
index 0000000..ac9fa19
--- /dev/null
+++ b/test/errc_test2.cpp
@@ -0,0 +1,20 @@
+// Copyright 2020 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/system/errc.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+int main()
+{
+    BOOST_TEST_EQ( make_error_code( boost::system::errc::success ).value(), 0 );
+    BOOST_TEST_EQ( make_error_condition( boost::system::errc::success ).value(), 0 );
+
+    BOOST_TEST_EQ( make_error_code( boost::system::errc::no_such_file_or_directory ).value(), ENOENT );
+    BOOST_TEST_EQ( make_error_condition( boost::system::errc::no_such_file_or_directory ).value(), ENOENT );
+
+    BOOST_TEST_EQ( make_error_code( boost::system::errc::address_family_not_supported ).value(), EAFNOSUPPORT );
+    BOOST_TEST_EQ( make_error_condition( boost::system::errc::address_family_not_supported ).value(), EAFNOSUPPORT );
+
+    return boost::report_errors();
+}