diff --git a/src/components/Recorder.js b/src/components/Recorder.js
index 8faed86..e0190e6 100644
--- a/src/components/Recorder.js
+++ b/src/components/Recorder.js
@@ -248,7 +248,9 @@ export default class Recorder extends H5P.EventDispatcher {
     this.stream.getAudioTracks().forEach(track => track.stop());
     this.sourceNode.disconnect();
     this.scriptProcessorNode.disconnect();
-    this.audioContext.close();
+    if (this.audioContext.state !== 'closed') {
+      this.audioContext.close();
+    }
 
     delete this.userMedia;
   }