diff --git a/web_src/js/index.js b/web_src/js/index.js
index cad60cdc2..2cc622cc0 100755
--- a/web_src/js/index.js
+++ b/web_src/js/index.js
@@ -4113,13 +4113,7 @@ function initTopicbar() {
   $.fn.form.settings.rules.validateTopic = function (_values, regExp) {
     const topics = topicDropdown.children('a.ui.label');
     const status =
-      topics.length === 0 ||
-      topics
-        .last()
-        .attr('data-value')
-        .match(regExp) || topics
-        .last()
-        .attr('data-value').length <= 35;
+      topics.length === 0 || (topics.last().attr('data-value').match(regExp) !== null && topics.last().attr('data-value').length <= 35);
     if (!status) {
       topics
         .last()