diff --git a/dist b/dist
index 65ea4248..e58f6331 160000
--- a/dist
+++ b/dist
@@ -1 +1 @@
-Subproject commit 65ea42481e33ae80064e2b36cdfead764d18123c
+Subproject commit e58f6331158882d15b0ac25e8b77a0e049d5d2f2
diff --git a/package.json b/package.json
index 58b52f51..6d7791f0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "yjs",
-  "version": "0.8.8",
+  "version": "0.8.9",
   "description": "A framework for real-time p2p shared editing on arbitrary complex data types",
   "main": "./src/y.js",
   "scripts": {
diff --git a/src/Connector.js b/src/Connector.js
index 9607b536..74af6f1d 100644
--- a/src/Connector.js
+++ b/src/Connector.js
@@ -75,19 +75,21 @@ module.exports = function (Y/* :any */) {
       this.userEventListeners.push(f)
     }
     userLeft (user) {
-      delete this.connections[user]
-      if (user === this.currentSyncTarget) {
-        this.currentSyncTarget = null
-        this.findNextSyncTarget()
-      }
-      this.syncingClients = this.syncingClients.filter(function (cli) {
-        return cli !== user
-      })
-      for (var f of this.userEventListeners) {
-        f({
-          action: 'userLeft',
-          user: user
+      if (this.connections[user] != null) {
+        delete this.connections[user]
+        if (user === this.currentSyncTarget) {
+          this.currentSyncTarget = null
+          this.findNextSyncTarget()
+        }
+        this.syncingClients = this.syncingClients.filter(function (cli) {
+          return cli !== user
         })
+        for (var f of this.userEventListeners) {
+          f({
+            action: 'userLeft',
+            user: user
+          })
+        }
       }
     }
     userJoined (user, role) {