diff --git a/tools/droiddoc/templates-sdk/assets/js/docs.js b/tools/droiddoc/templates-sdk/assets/js/docs.js
index 60bbaf9..2efe3dc 100644
--- a/tools/droiddoc/templates-sdk/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk/assets/js/docs.js
@@ -186,6 +186,8 @@
       subNavEl.find("li.google > a").addClass("selected");
     } else if ($("body").hasClass("samples")) {
       subNavEl.find("li.samples > a").addClass("selected");
+    } else if ($("body").hasClass("preview")) {
+      subNavEl.find("li.preview > a").addClass("selected");
     } else {
       parentNavEl.removeClass('has-subnav').addClass("selected");
     }