unit test for bluebird promisified functions

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/async.js b/lib/async.js
index e756854..32a2d82 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -1194,7 +1194,7 @@
                 result.then(function(value) {
                     callback(null, value);
                 }).catch(function(err) {
-                    callback(new Error(err));
+                    callback(err.message ? err : new Error(err));
                 });
             } else {
                 callback(null, result);