diff --git a/packages/layout/src/components/SiderMenu/style/menu.ts b/packages/layout/src/components/SiderMenu/style/menu.ts
index 9dd1fef4e376..0e259bbb10f4 100644
--- a/packages/layout/src/components/SiderMenu/style/menu.ts
+++ b/packages/layout/src/components/SiderMenu/style/menu.ts
@@ -18,7 +18,7 @@ const genProLayoutBaseMenuStyle: GenerateStyle<ProLayoutBaseMenuToken> = (token)
           paddingInlineStart: 10,
         },
       },
-      [`& &-collapsed`]: {
+      [`&&-collapsed`]: {
         [`${token.antCls}-menu-item, 
         ${token.antCls}-menu-item-group > ${token.antCls}-menu-item-group-list > ${token.antCls}-menu-item, 
         ${token.antCls}-menu-item-group > ${token.antCls}-menu-item-group-list > ${token.antCls}-menu-submenu > ${token.antCls}-menu-submenu-title,