diff --git a/tools/droiddoc/templates/assets/android-developer-docs.js b/tools/droiddoc/templates/assets/android-developer-docs.js
index 5f472f6..db5e64f 100644
--- a/tools/droiddoc/templates/assets/android-developer-docs.js
+++ b/tools/droiddoc/templates/assets/android-developer-docs.js
@@ -99,7 +99,7 @@
 }
 
 function writeCookie(cookie, val, section, expiration) {
-  if (!val) return;  
+  if (val==undefined) return;
   section = section == null ? "_" : "_"+section+"_";
   if (expiration == null) {
     var date = new Date();