diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md
index 4511d6d323..d43f5e17d5 100644
--- a/docs/components/dropdowns.md
+++ b/docs/components/dropdowns.md
@@ -361,7 +361,7 @@ Trigger dropdown menus above elements by adding `.dropup` to the parent element.
       <button type="button" class="btn btn-secondary">
         Split dropup
       </button>
-      <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
         <span class="sr-only">Toggle Dropdown</span>
       </button>
       <div class="dropdown-menu">