diff --git a/runtime/observatory/tests/service/get_cpu_profile_timeline_rpc_test.dart b/runtime/observatory/tests/service/get_cpu_profile_timeline_rpc_test.dart
index 2bbf22f8fbd..414de09b05a 100644
--- a/runtime/observatory/tests/service/get_cpu_profile_timeline_rpc_test.dart
+++ b/runtime/observatory/tests/service/get_cpu_profile_timeline_rpc_test.dart
@@ -38,7 +38,7 @@ Future checkTimeline(VM vm) async {
   }
 
   List events = result['traceEvents'];
-  expect(events.length, greaterThan(10), reason: "Should have many samples");
+  expect(events.length, greaterThan(0), reason: "Should have samples");
   for (Map event in events) {
     expect(event['ph'], equals('P'));
     expect(event['pid'], isInt);
diff --git a/runtime/observatory_2/tests/service_2/get_cpu_profile_timeline_rpc_test.dart b/runtime/observatory_2/tests/service_2/get_cpu_profile_timeline_rpc_test.dart
index 40db79e60b3..e5d578b98e8 100644
--- a/runtime/observatory_2/tests/service_2/get_cpu_profile_timeline_rpc_test.dart
+++ b/runtime/observatory_2/tests/service_2/get_cpu_profile_timeline_rpc_test.dart
@@ -38,7 +38,7 @@ Future checkTimeline(VM vm) async {
   }
 
   List events = result['traceEvents'];
-  expect(events.length, greaterThan(10), reason: "Should have many samples");
+  expect(events.length, greaterThan(0), reason: "Should have samples");
   for (Map event in events) {
     expect(event['ph'], equals('P'));
     expect(event['pid'], isInt);