diff --git a/components/dropdown/demo/basic.md b/components/dropdown/demo/basic.md
index a516eac39b5b79fd7344f87f0a5fec888808cf12..872806ed30d4b53b84ca91ff204cbbc0ed06e19c 100644
--- a/components/dropdown/demo/basic.md
+++ b/components/dropdown/demo/basic.md
@@ -23,7 +23,7 @@ var menu =