diff --git a/css/ebi-css-build/_ebi_masthead_styles.scss b/css/ebi-css-build/_ebi_masthead_styles.scss
index f630da4afb7807a99e821080a582d83bdfc50d8a..e4af36154ced9a3ad75aee2b7e05caed99e86f72 100644
--- a/css/ebi-css-build/_ebi_masthead_styles.scss
+++ b/css/ebi-css-build/_ebi_masthead_styles.scss
@@ -363,6 +363,7 @@
   .dropdown.menu > li.is-dropdown-submenu-parent > a::after { border-color: #FFF transparent transparent; }
 
   // active sidebar items
+  .menu > li > a.is-active,
   .menu > li > a.active { font-weight: bold; }
 
   // dropdown arrow