diff --git a/lib/airsonos.js b/lib/airsonos.js
index 61ca1b3..3299fd3 100644
--- a/lib/airsonos.js
+++ b/lib/airsonos.js
@@ -50,7 +50,11 @@ class AirSonos {
   }
 
   stop() {
-    return Promise.all(this.tunnels.map(tunnel.stop));
+    var promises = []
+    for (let id in this.tunnels) {
+      promises.push(this.tunnels[id].stop())
+    }
+    return Promise.all(promises);
   }
 }
 
diff --git a/lib/tunnel.js b/lib/tunnel.js
index a855eff..4bd1dbe 100644
--- a/lib/tunnel.js
+++ b/lib/tunnel.js
@@ -96,8 +96,8 @@ class DeviceTunnel extends events.EventEmitter {
   }
 
   stop() {
-    this.airplayServer.stop();
-    this.icecastServer.stop();
+    if (this.airplayServer) this.airplayServer.stop();
+    if (this.icecastServer) this.icecastServer.stop();
   }
 
 }