diff --git a/theme/boost/scss/moodle/moremenu.scss b/theme/boost/scss/moodle/moremenu.scss
index 8200b4edd1d..d3a9ff154a9 100644
--- a/theme/boost/scss/moodle/moremenu.scss
+++ b/theme/boost/scss/moodle/moremenu.scss
@@ -18,7 +18,7 @@
 
         &.active {
             font-weight: bold;
-            border-bottom: solid 3px $blue;
+            border-bottom: solid 3px $primary;
         }
         &[data-toggle="tab"] {
             display: inline-flex;