fix issue #98

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/async.js b/lib/async.js
index 52276d6..888f267 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -113,7 +113,7 @@
                 else {
                     completed += 1;
                     if (completed === arr.length) {
-                        callback();
+                        callback(null);
                     }
                     else {
                         iterate();