diff --git a/lib/ruby_ui/checkbox/checkbox.rb b/lib/ruby_ui/checkbox/checkbox.rb
index 23ce0558..3cf579d3 100644
--- a/lib/ruby_ui/checkbox/checkbox.rb
+++ b/lib/ruby_ui/checkbox/checkbox.rb
@@ -17,9 +17,9 @@ def default_attrs
           action: "change->ruby-ui--checkbox-group#onChange change->ruby-ui--form-field#onInput invalid->ruby-ui--form-field#onInvalid"
         },
         class: [
-          "peer h-4 w-4 shrink-0 rounded-sm border-input ring-offset-background accent-primary",
+          "peer h-4 w-4 shrink-0 rounded-sm border border-primary ring-offset-background accent-primary",
           "disabled:cursor-not-allowed disabled:opacity-50",
-          "checked:bg-primary checked:text-primary-foreground dark:checked:bg-secondary checked:text-primary checked:border-primary",
+          "checked:bg-primary checked:text-primary-foreground",
           "aria-disabled:cursor-not-allowed aria-disabled:opacity-50 aria-disabled:pointer-events-none",
           "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
         ]