diff --git a/LanguageFeatures/Extension-methods/extension_member_resolution_t04.dart b/LanguageFeatures/Extension-methods/extension_member_resolution_t04.dart
index 62b7432..a2911c1 100644
--- a/LanguageFeatures/Extension-methods/extension_member_resolution_t04.dart
+++ b/LanguageFeatures/Extension-methods/extension_member_resolution_t04.dart
@@ -23,8 +23,8 @@
 
 main() {
   List<C> list1 = [];
-  Expect.isTrue(list1.method() is C);
+  Expect.isTrue(list1.method() == C);
 
   List<A> list2 = [];
-  Expect.isTrue(list2.method() is A);
+  Expect.isTrue(list2.method() == A);
 }