diff --git a/example/examples.cpp b/example/examples.cpp
index 03cff5f..ea497f4 100644
--- a/example/examples.cpp
+++ b/example/examples.cpp
@@ -15,9 +15,9 @@ struct foo_t { int i; nested_t nested; };
 
 
 static_assert(std::is_same<
-    boost::pfr::flat_tuple_element_t<1, foo_t>, // Flat reflection
+    boost::pfr::flat_tuple_element_t<1, foo_t>, // Flat reflection.
     char    // `char`, not `nested_t`!
->::value);
+>::value, "");
 
 
 // Requires C++17:
@@ -26,7 +26,7 @@ static_assert(std::is_same<
 static_assert(std::is_same<
     boost::pfr::tuple_element_t<1, foo_t>,      // Precise reflection.
     nested_t
->::value); //<-
+>::value, ""); //<-
 #endif //->
 //] [/pfr_intro]
 
diff --git a/include/boost/pfr/detail/core14.hpp b/include/boost/pfr/detail/core14.hpp
index aff58c9..372e818 100644
--- a/include/boost/pfr/detail/core14.hpp
+++ b/include/boost/pfr/detail/core14.hpp
@@ -597,7 +597,7 @@ decltype(auto) as_tuple(T&& val) noexcept {
     typedef std::remove_reference_t<T> type;
     static_assert(
         boost::pfr::detail::is_flat_refelectable<type>( std::make_index_sequence<fields_count<type>()>{} ),
-        "Not possible in C++14 to represent that type without loosing information. Use flat_ version or change type definition"
+        "Not possible in C++14 to represent that type without loosing information. Use boost::pfr::flat_ version, or change type definition, or enable C++17"
     );
     return tie_as_flat_tuple(std::forward<T>(val));
 }