diff --git a/packages/fractalite/assets/css/nav.scss b/packages/fractalite/assets/css/nav.scss
index 45a07dc..e5f6dc4 100644
--- a/packages/fractalite/assets/css/nav.scss
+++ b/packages/fractalite/assets/css/nav.scss
@@ -39,7 +39,7 @@
     }
   }
 
-  &__item.is-open > &__toggle:before {
+  &__item.is-expanded > &__toggle:before {
     transform: rotate(90deg);
   }