diff --git a/admin/themes/default/js/batchManagerGlobal.js b/admin/themes/default/js/batchManagerGlobal.js
index d0eb1ce0a..c1ef1ae98 100644
--- a/admin/themes/default/js/batchManagerGlobal.js
+++ b/admin/themes/default/js/batchManagerGlobal.js
@@ -282,7 +282,7 @@ jQuery('#applyAction').click(function(e) {
     var todo = 0;
     var syncBlockSize = Math.min(
       Number((elements.length/2).toFixed()),
-      1000
+      500
     );
     var image_ids = Array();