diff --git a/src/pretix/static/pretixpresale/js/ui/cart.js b/src/pretix/static/pretixpresale/js/ui/cart.js
index e0c595edc..98a192558 100644
--- a/src/pretix/static/pretixpresale/js/ui/cart.js
+++ b/src/pretix/static/pretixpresale/js/ui/cart.js
@@ -69,8 +69,6 @@ var cart = {
 $(function () {
     "use strict";
 
-    moment.locale($("body").attr("data-locale").substr(0, 2));
-
     if ($("#cart-deadline").length) {
         cart.init();
     }
diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 869dd946d..fe94fc876 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -328,6 +328,7 @@ $(function () {
     "use strict";
 
     $("body").removeClass("nojs");
+    moment.locale($("body").attr("data-datetimelocale"));
 
     var scrollpos = sessionStorage ? sessionStorage.getItem('scrollpos') : 0;
     if (scrollpos) {