diff --git a/js/ndnProtocol/components/ndnProtocolService.js b/js/ndnProtocol/components/ndnProtocolService.js
index 8641755..3f630e8 100644
--- a/js/ndnProtocol/components/ndnProtocolService.js
+++ b/js/ndnProtocol/components/ndnProtocolService.js
@@ -57,7 +57,7 @@
     
             var template = new Interest(new Name([]));
             // Use the same default as NDN.expressInterest.
-            template.interestLifetime = 4.0;
+            template.interestLifetime = 4000; // milliseconds
             var searchWithoutNdn = extractNdnSearch(search, template);
     
             var requestContent = function(contentListener) {