diff --git a/Release/include/cpprest/details/cpprest_compat.h b/Release/include/cpprest/details/cpprest_compat.h
index 6dae41d8d9..bf10747987 100644
--- a/Release/include/cpprest/details/cpprest_compat.h
+++ b/Release/include/cpprest/details/cpprest_compat.h
@@ -71,12 +71,20 @@
 
 #ifdef _NO_ASYNCRTIMP
 #define _ASYNCRTIMP
+#define _ASYNCRTIMP_TYPEINFO
 #else // ^^^ _NO_ASYNCRTIMP ^^^ // vvv !_NO_ASYNCRTIMP vvv
 #ifdef _ASYNCRT_EXPORT
 #define _ASYNCRTIMP __declspec(dllexport)
 #else // ^^^ _ASYNCRT_EXPORT ^^^ // vvv !_ASYNCRT_EXPORT vvv
 #define _ASYNCRTIMP __declspec(dllimport)
 #endif // _ASYNCRT_EXPORT
+
+#if defined(_WIN32)
+#define _ASYNCRTIMP_TYPEINFO
+#else // ^^^ _WIN32 ^^^ // vvv !_WIN32 vvv
+#define _ASYNCRTIMP_TYPEINFO __attribute__((visibility("default")))
+#endif // _WIN32
+
 #endif // _NO_ASYNCRTIMP
 
 #ifdef CASABLANCA_DEPRECATION_NO_WARNINGS
diff --git a/Release/include/cpprest/http_msg.h b/Release/include/cpprest/http_msg.h
index 50f05ef213..55c0433c94 100644
--- a/Release/include/cpprest/http_msg.h
+++ b/Release/include/cpprest/http_msg.h
@@ -187,7 +187,7 @@ class header_names
 /// <summary>
 /// Represents an HTTP error. This class holds an error message and an optional error code.
 /// </summary>
-class http_exception : public std::exception
+class _ASYNCRTIMP_TYPEINFO http_exception : public std::exception
 {
 public:
     /// <summary>