diff --git a/include/boost/system/detail/error_category.hpp b/include/boost/system/detail/error_category.hpp
index f385408..b6c6dae 100644
--- a/include/boost/system/detail/error_category.hpp
+++ b/include/boost/system/detail/error_category.hpp
@@ -84,18 +84,11 @@ protected:
 
     ~error_category() = default;
 
-#if !BOOST_WORKAROUND(BOOST_GCC, < 40800)
-    BOOST_CONSTEXPR
-#endif
-    error_category() BOOST_NOEXCEPT: id_( 0 ), stdcat_(), sc_init_()
+    constexpr error_category() BOOST_NOEXCEPT: id_( 0 ), stdcat_(), sc_init_()
     {
     }
 
-    explicit
-#if !BOOST_WORKAROUND(BOOST_GCC, < 40800)
-    BOOST_CONSTEXPR
-#endif
-    error_category( boost::ulong_long_type id ) BOOST_NOEXCEPT: id_( id ), stdcat_(), sc_init_()
+    explicit constexpr error_category( boost::ulong_long_type id ) BOOST_NOEXCEPT: id_( id ), stdcat_(), sc_init_()
     {
     }
 
diff --git a/include/boost/system/detail/error_code.hpp b/include/boost/system/detail/error_code.hpp
index 6458e23..2a28a68 100644
--- a/include/boost/system/detail/error_code.hpp
+++ b/include/boost/system/detail/error_code.hpp
@@ -108,10 +108,7 @@ public:
 
     // constructors:
 
-#if !BOOST_WORKAROUND(BOOST_GCC, < 40800)
-    BOOST_CONSTEXPR
-#endif
-    error_code() BOOST_NOEXCEPT:
+    constexpr error_code() BOOST_NOEXCEPT:
         d1_(), lc_flags_( 0 )
     {
     }