diff --git a/inst/lib/bsw5/dist/yeti/_bootswatch.scss b/inst/lib/bsw5/dist/yeti/_bootswatch.scss
index d3fd185..3307d49 100644
--- a/inst/lib/bsw5/dist/yeti/_bootswatch.scss
+++ b/inst/lib/bsw5/dist/yeti/_bootswatch.scss
@@ -78,6 +78,10 @@ $web-font-path: "https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,
     border-color: shade-color($primary, 10%);
   }
 
+  &-default {
+    border-color: shade-color($secondary, 10%);
+  }
+
   &-secondary {
     border-color: shade-color($secondary, 10%);
   }