diff --git a/app/assets/javascripts/darkswarm/filters/dates.js.coffee b/app/assets/javascripts/darkswarm/filters/dates.js.coffee
index 7b5dd861d5..91efe89d1e 100644
--- a/app/assets/javascripts/darkswarm/filters/dates.js.coffee
+++ b/app/assets/javascripts/darkswarm/filters/dates.js.coffee
@@ -4,7 +4,7 @@ Darkswarm.filter "date_in_words", ->
 
 Darkswarm.filter "sensible_timeframe", (date_in_wordsFilter)->
   (date) ->
-    if moment().add('days', 2) < moment(date)
+    if moment().add(2, 'days') < moment(date)
       t 'orders_open'
     else
       t('closing') + date_in_wordsFilter(date)