diff --git a/lib/cwtch/ffi.dart b/lib/cwtch/ffi.dart
index 325db72..4078630 100644
--- a/lib/cwtch/ffi.dart
+++ b/lib/cwtch/ffi.dart
@@ -57,6 +57,8 @@ class CwtchFfi implements Cwtch {
   ProfileListState profileCN;
   CwtchNotifier cwtchNotifier;
 
+  Isolate cwtchIsolate;
+
   CwtchFfi(ProfileListState profs) {
     library = DynamicLibrary.open("libCwtch.so");
     profileCN = profs;
@@ -81,7 +83,7 @@ class CwtchFfi implements Cwtch {
 
     // Test non timer getting events from libcwtch-go
     var _receivePort = ReceivePort();
-    var _isolate = await Isolate.spawn(_checkAppbusEvents, _receivePort.sendPort);
+    cwtchIsolate = await Isolate.spawn(_checkAppbusEvents, _receivePort.sendPort);
     _receivePort.listen((message) {
       var env = jsonDecode(message);
       cwtchNotifier.handleMessage(env["EventType"], env["Data"]);
@@ -89,6 +91,13 @@ class CwtchFfi implements Cwtch {
 
     //repaintProfileStream = pollRepaintProfileEvents();
   }
+
+  @override
+  void dispose() {
+    if (cwtchIsolate != null) {
+      cwtchIsolate.kill();
+    }
+  }
 /*
   Stream<bool> GetRepaintProfileStream() {
     return repaintProfileStream;