diff --git a/source/common/json/json_streamer.h b/source/common/json/json_streamer.h
index 39c0c18c67a0..911fecc343cd 100644
--- a/source/common/json/json_streamer.h
+++ b/source/common/json/json_streamer.h
@@ -444,12 +444,6 @@ template <class OutputBufferType> class StreamerBase : public SerializerBase<Out
     levels_.pop();
   }
 
-#endif
-
-  OutputBufferType response_;
-  std::string sanitize_buffer_;
-
-#ifndef NDEBUG
   // Keeps a stack of Maps or Arrays (subclasses of Level) to facilitate
   // assertions that only the top-level map/array can be written.
   std::stack<Level*> levels_;