diff --git a/History.md b/History.md
index cc91780c5d7..e9c11971ffb 100644
--- a/History.md
+++ b/History.md
@@ -1,6 +1,12 @@
 ## v.NEXT
 
 
+## v.0.8.1.2
+
+* Fix memory leak (introduced in 0.8.1) by making sure to unregister
+  sessions at the server when they are closed due to heartbeat timeout.
+
+
 ## v0.8.1.1
 
 * Fix 0.8.1 regression preventing clients from specifying `_id` on insert. #2097
diff --git a/packages/livedata/livedata_server.js b/packages/livedata/livedata_server.js
index fff6114866d..b6295d13a85 100644
--- a/packages/livedata/livedata_server.js
+++ b/packages/livedata/livedata_server.js
@@ -298,7 +298,7 @@ var Session = function (server, version, socket, options) {
       heartbeatInterval: options.heartbeatInterval,
       heartbeatTimeout: options.heartbeatTimeout,
       onTimeout: function () {
-        self.destroy();
+        self.close();
       },
       sendPing: function () {
         self.send({msg: 'ping'});