diff --git a/www/common/rpc.js b/www/common/rpc.js
index 7c5012592..c0452b80a 100644
--- a/www/common/rpc.js
+++ b/www/common/rpc.js
@@ -217,6 +217,9 @@ types of messages:
             });
         });
 
+        // network.onHistoryKeeperChange is defined in chainpad-netflux.js
+        // The function we pass will be called when the drive reconnects and
+        // chainpad-netflux detects a new history keeper id
         if (network.onHistoryKeeperChange) {
             network.onHistoryKeeperChange(function () {
                 send('COOKIE', "", function (e) {