diff --git a/packages/session-ui/src/components/markdown.css b/packages/session-ui/src/components/markdown.css
index db43419a983..2e9120c8866 100644
--- a/packages/session-ui/src/components/markdown.css
+++ b/packages/session-ui/src/components/markdown.css
@@ -68,7 +68,7 @@
   h3 {
     font-size: 14px;
     color: var(--v2-text-text-base);
-    font-weight: 600;
+    font-weight: var(--font-weight-bold);
     margin-top: 20px;
     margin-bottom: 8px;
     line-height: var(--line-height-large);