diff --git a/lib/notifications.dart b/lib/notifications.dart
index cb6f57275f7..ca63b860235 100644
--- a/lib/notifications.dart
+++ b/lib/notifications.dart
@@ -18,7 +18,7 @@ class NotificationService {
   @visibleForTesting
   static void debugReset() {
     instance.token.dispose();
-    instance.token = ValueNotifier(null);
+    _instance = null;
   }
 
   /// The FCM registration token for this install of the app.