1 files changed, 1 insertions, 1 deletions
diff --git a/lib/async.js b/lib/async.js
index 629b2a5..bfc8bdd 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -221,7 +221,7 @@
     async.eachOf = function (object, iterator, callback) {
         callback = _once(callback || noop);
         object = object || [];
-        var size = object.length || _keys(object).length;
+        var size = _isArrayLike(object) ? object.length : _keys(object).length;
         var completed = 0;
         if (!size) {
             return callback(null);