diff --git a/dist/spark/DevLauncher.mjs b/dist/spark/DevLauncher.mjs
index 1e9319d0..ed81a7a0 100644
--- a/dist/spark/DevLauncher.mjs
+++ b/dist/spark/DevLauncher.mjs
@@ -30,6 +30,11 @@ export default class DevLauncher {
         this._ui.startApp(this._appType);
     }
 
+    _stopApp() {
+        this._ui.destroy();
+        this._ui = null;
+    }
+
     _loadInspector() {
         if (this._options.useInspector) {
             /* Attach the inspector to create a fake DOM that shows where lightning elements can be found. */
diff --git a/dist/spark/start.mjs b/dist/spark/start.mjs
index ba2e80ff..07a06379 100644
--- a/dist/spark/start.mjs
+++ b/dist/spark/start.mjs
@@ -8,4 +8,8 @@ sparkview.on('onKeyDown', function(e) {
     launcher._handleKey(e);
 });
 
-launcher.launch(App, {debug:false, h:sparkscene.h}, {useInspector: false});
+sparkscene.on('onClose', function(e) {
+    launcher._stopApp();
+});
+
+launcher.launch(App, {debug:false, h:sparkscene.h}, {useInspector: false});
\ No newline at end of file