diff --git a/blocks/myoverview/styles.css b/blocks/myoverview/styles.css
index 5df1e020c91..f77a80c5eba 100644
--- a/blocks/myoverview/styles.css
+++ b/blocks/myoverview/styles.css
@@ -5,8 +5,8 @@
 }
 .block_myoverview .whitebutton .btn-secondary {
     background: white;
-    border-color: var(--primary);
-    color: var(--primary);
+    border-color: var(--bs-primary);
+    color: var(--bs-primary);
 }
 
 .page-mycourses .block_myoverview .block-controls {