diff --git a/lib/$.coffee b/lib/$.coffee
index 89451e20b..53a6a7dce 100644
--- a/lib/$.coffee
+++ b/lib/$.coffee
@@ -282,7 +282,7 @@ $.set = do ->
       items = {}
       localItems = {}
     catch err
-      c.error err
+      c.error err.stack
 
   (key, val) ->
     if typeof key is 'string'