diff --git a/app/assets/javascripts/utilities/buildArticleHTML.js b/app/assets/javascripts/utilities/buildArticleHTML.js
index bbb76fee6..0e6ec291c 100644
--- a/app/assets/javascripts/utilities/buildArticleHTML.js
+++ b/app/assets/javascripts/utilities/buildArticleHTML.js
@@ -131,7 +131,7 @@ function buildArticleHTML(article, currentUserId = null) {
       }">
                           <div class="multiple_reactions_aggregate">
                             <span class="multiple_reactions_icons_container" dir="rtl">
-                                ${icons.join()}
+                                ${icons.join('')}
                             </span>
                             <span class="aggregate_reactions_counter">
                               <span class="hidden s:inline">${reactionsCount}&nbsp;${reactionsText}</span>