diff --git a/lib/response.js b/lib/response.js
index 0fd75d3ff..a7ab2196e 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -346,8 +346,6 @@ function patch(Response) {
         var log = self.log;
         var code, body, headers, format;
 
-        self._sent = true;
-
         // derive arguments from types, one by one
         var index = 0;
         // Check to see if the first argument is a status code
diff --git a/lib/server.js b/lib/server.js
index f8006ece3..8d4748734 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -1084,7 +1084,7 @@ Server.prototype._routeErrorResponse = function _routeErrorResponse(
 
     self._emitErrorEvents(req, res, null, err, function emitError(emitErr) {
         // Prevent double handling
-        if (res._sent) {
+        if (res.headersSent) {
             return;
         }