diff --git a/packages/flutter_tools/lib/src/protocol_discovery.dart b/packages/flutter_tools/lib/src/protocol_discovery.dart
index d21e602d2d6..578052bfb78 100644
--- a/packages/flutter_tools/lib/src/protocol_discovery.dart
+++ b/packages/flutter_tools/lib/src/protocol_discovery.dart
@@ -167,7 +167,6 @@ class _BufferedStreamController<T> {
     final StreamController<T> streamControllerInstance = StreamController<T>.broadcast();
       streamControllerInstance.onListen = () {
       for (final dynamic event in _events) {
-        assert(T is! List);
         if (event is T) {
           streamControllerInstance.add(event);
         } else {