diff --git a/lib/cluster.js b/lib/cluster.js
index 589798ece37..01547d60891 100644
--- a/lib/cluster.js
+++ b/lib/cluster.js
@@ -80,7 +80,7 @@ function startMaster() {
   process.on('uncaughtException', function(e) {
     // Quickly try to kill all the workers.
     // TODO: be session leader - will cause auto SIGHUP to the children.
-    cluster.eachWorker(function(worker) {
+    eachWorker(function(worker) {
       debug("kill worker " + worker.pid);
       worker.kill();
     })