diff --git a/lib/http.js b/lib/http.js
index 212b8becb9..8fddd394a3 100644
--- a/lib/http.js
+++ b/lib/http.js
@@ -515,7 +515,7 @@ OutgoingMessage.prototype._writeRaw = function(data, encoding) {
       var timer = setTimeout(function() {
         socket.emit('close');
       });
-      socket.on('close', function() {
+      socket.once('close', function() {
         clearTimeout(timer);
       });
     }