diff --git a/website/src/server.js b/website/src/server.js
index 7040d82c3d..494febfb97 100644
--- a/website/src/server.js
+++ b/website/src/server.js
@@ -13,7 +13,9 @@ var cores = +nconf.get("WEB_CONCURRENCY") || 0;
 
 if (cores!==0 && cluster.isMaster && (isDev || isProd)) {
   // Fork workers. If config.json has CORES=x, use that - otherwise, use all cpus-1 (production)
-  _.times(cores, cluster.fork);
+  _.times(cores, function () {
+    cluster.fork();
+  });
 
   cluster.on('disconnect', function(worker, code, signal) {
     var w = cluster.fork(); // replace the dead worker