diff --git a/server/schema/article/article.resolver.js b/server/schema/article/article.resolver.js
index 41fe97b9..fa9d6550 100644
--- a/server/schema/article/article.resolver.js
+++ b/server/schema/article/article.resolver.js
@@ -289,9 +289,9 @@ module.exports = {
       onlyPublished =
         onlyPublished || !UserPermission.exists(session, authToken, decodedToken, 'article.list.unpublished');
 
-      const startAndEndDate = (year, month) => {
+      function startAndEndDate(year, month) {
         return month ? [new Date(year, month - 1), new Date(year, month)] : [new Date(year, 0), new Date(year + 1, 0)];
-      };
+      }
       const _articles = await Article.findByYearAndMonth(
         allowRestricted,
         onlyPublished,