diff --git a/lib/_copy.js b/lib/_copy.js
index d4ace8d..00383b2 100644
--- a/lib/_copy.js
+++ b/lib/_copy.js
@@ -49,9 +49,10 @@ function ncp (source, dest, options, callback) {
   }
 
   function getStats(source) {
+    var defer = global.setImmediate || process.nextTick
     var stat = dereference ? fs.stat : fs.lstat
     if (running >= limit) {
-      return setImmediate(function () {
+      return defer(function () {
         getStats(source)
       })
     }