diff --git a/include/rapidjson/filereadstream.h b/include/rapidjson/filereadstream.h
index a31d7c0..b6d6524 100644
--- a/include/rapidjson/filereadstream.h
+++ b/include/rapidjson/filereadstream.h
@@ -51,8 +51,8 @@ public:
     size_t Tell() const { return count_ + static_cast<size_t>(current_ - buffer_); }
 
     // Not implemented
-    void Put(Ch) { RAPIDJSON_ASSERT(false); }
-    void Flush() { RAPIDJSON_ASSERT(false); } 
+    void Put(Ch)  RAPIDJSON_NORETURN_SUFFIX { RAPIDJSON_ASSERT(false); }
+    void Flush()  RAPIDJSON_NORETURN_SUFFIX { RAPIDJSON_ASSERT(false); } 
     Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
     size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }