diff --git a/src/room.js b/src/room.js
index 2c09b55..9f52304 100644
--- a/src/room.js
+++ b/src/room.js
@@ -450,6 +450,10 @@ class Source {
    }
 
    cueChanged() {
+      if (!this) {
+         return
+      }
+
       var self = this
 
       var latestCuedTrack = performanceTime.latestCuedTrack(self.data)