diff --git a/lib/src/lifecycle_module.dart b/lib/src/lifecycle_module.dart
index 97a7464..c7f932f 100644
--- a/lib/src/lifecycle_module.dart
+++ b/lib/src/lifecycle_module.dart
@@ -17,7 +17,7 @@ library w_module.src.lifecycle_module;
 import 'dart:async';
 
 import 'package:logging/logging.dart';
-import 'package:meta/meta.dart' show mustCallSuper, protected, required;
+import 'package:meta/meta.dart' show mustCallSuper, protected;
 import 'package:opentracing/opentracing.dart';
 import 'package:w_common/disposable.dart';
 
@@ -178,9 +178,6 @@ abstract class LifecycleModule extends SimpleModule with Disposable {
     }
 
     final tracer = globalTracer();
-    if (tracer == null) {
-      return null;
-    }
 
     List<Reference> references = [];
     if (_parentContext != null) {
@@ -230,9 +227,6 @@ abstract class LifecycleModule extends SimpleModule with Disposable {
     }
 
     final tracer = globalTracer();
-    if (tracer == null) {
-      return null;
-    }
 
     tracer
         .startSpan(
diff --git a/test/event_test.dart b/test/event_test.dart
index 1215feb..fbabb6c 100644
--- a/test/event_test.dart
+++ b/test/event_test.dart
@@ -28,10 +28,6 @@ void main() {
       event = Event<String>(key);
     });
 
-    test('should inherit from Stream', () {
-      expect(event is Stream, isTrue);
-    });
-
     test('should provide means to listen to the stream it was created from',
         () async {
       Completer completer = Completer();
diff --git a/test/utils.dart b/test/utils.dart
index 7cc9c30..ce611c0 100644
--- a/test/utils.dart
+++ b/test/utils.dart
@@ -30,9 +30,6 @@ class _LogLevelMatcher extends Matcher {
 
   @override
   bool matches(dynamic record, Map matchState) {
-    if (_level == null) {
-      return false;
-    }
     if (record is LogRecord) {
       return record.level == _level;
     }