diff --git a/src/main/resources/templates/fragments/leftMenu.html b/src/main/resources/templates/fragments/leftMenu.html
index 386092a9..7f5d603e 100644
--- a/src/main/resources/templates/fragments/leftMenu.html
+++ b/src/main/resources/templates/fragments/leftMenu.html
@@ -11,7 +11,6 @@
           <th:block th:if="${cat1Code.itemCd eq firstMenu.cat1Cd}">
              <button class="btn btn-toggle align-items-center rounded collapsed"
                     data-bs-toggle="collapse" aria-expanded="false"
-              th:data-categoryseq="${cat1Code.itemValue}"
               th:data-bs-target="'#collapse'+${cat1Code.itemCd}" th:text="${cat1Code.itemValue}">
             </button>
             <div class="collapse ps-3" th:id="|collapse${cat1Code.itemCd}|">