diff --git a/lib/Connection.js b/lib/Connection.js
index 537f6be..084ae7c 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -1115,7 +1115,7 @@ Connection.prototype._resUntagged = function(info) {
 
     if (toget.length === 0) {
       process.nextTick(function() {
-        msg.ended = true;
+        if (msg) msg.ended = true;
         msgEmitter.emit('attributes', attrs);
         msgEmitter.emit('end');
       });