diff --git a/build/media_source/templates/administrator/atum/scss/blocks/_sidebar.scss b/build/media_source/templates/administrator/atum/scss/blocks/_sidebar.scss
index bf5f6d3375bd6..257ac3923470e 100644
--- a/build/media_source/templates/administrator/atum/scss/blocks/_sidebar.scss
+++ b/build/media_source/templates/administrator/atum/scss/blocks/_sidebar.scss
@@ -291,7 +291,6 @@
 @if $enable-dark-mode {
   @include color-mode(dark) {
     .sidebar-wrapper {
-      border: 1px solid rgba(255, 255, 255, .05);
       box-shadow: none;
       .main-nav {
         .badge {