diff --git a/sass/routes/_about-modal.scss b/sass/routes/_about-modal.scss
index 1256a6c666b4..3ea4dd3add3b 100644
--- a/sass/routes/_about-modal.scss
+++ b/sass/routes/_about-modal.scss
@@ -14,7 +14,7 @@
                 align-items: center;
                 padding: 20px 25px;
                 border: none;
-                border-bottom: 1px solid #ddd;
+                border-bottom: 1px solid rgba(var(--center-channel-color-rgb), 0.08);
                 background: transparent;
                 color: inherit;