diff --git a/runtime/observatory/tests/service/isolate_lifecycle_test.dart b/runtime/observatory/tests/service/isolate_lifecycle_test.dart
index 22f949062031..2c428af64ccf 100644
--- a/runtime/observatory/tests/service/isolate_lifecycle_test.dart
+++ b/runtime/observatory/tests/service/isolate_lifecycle_test.dart
@@ -109,7 +109,7 @@ var tests = <VMTest>[
     var resumesIssued = 0;
     var isolateList = vm.isolates.toList();
     for (var isolate in isolateList) {
-      if (isolate.name.endsWith('main')) {
+      if (isolate.name.endsWith('main()')) {
         continue;
       }
       try {
diff --git a/runtime/observatory/tests/service/set_name_rpc_test.dart b/runtime/observatory/tests/service/set_name_rpc_test.dart
index 1d743ccfc292..82db7454f749 100644
--- a/runtime/observatory/tests/service/set_name_rpc_test.dart
+++ b/runtime/observatory/tests/service/set_name_rpc_test.dart
@@ -12,6 +12,7 @@ var tests = <IsolateTest>[
   (Isolate isolate) async {
     expect(
         ((isolate.name == 'set_name_rpc_test.dart:main()') ||
+            (isolate.name == 'out.dill:main()') ||
             (isolate.name == 'out.jitsnapshot:main()')),
         isTrue);