1 files changed, 3 insertions, 0 deletions
diff --git a/lib/http.js b/lib/http.js
index e7e28e816..794af64e8 100644
--- a/lib/http.js
+++ b/lib/http.js
@@ -648,6 +648,9 @@ OutgoingMessage.prototype.addTrailers = function(headers) {
 
 
 OutgoingMessage.prototype.end = function(data, encoding) {
+  if (this.finished) {
+    return false;
+  }
   if (!this._header) {
     this._implicitHeader();
   }