diff --git a/packages/flutter_tools/lib/src/test/runner.dart b/packages/flutter_tools/lib/src/test/runner.dart
index 908c432dab..6254b884e8 100644
--- a/packages/flutter_tools/lib/src/test/runner.dart
+++ b/packages/flutter_tools/lib/src/test/runner.dart
@@ -394,6 +394,7 @@ void createChannelAndConnect(String path, String name, Function testMain) {
   channel.pipe(RemoteListener.start(() => testMain));
 }
 
+@pragma('vm:entry-point')
 void testMain() {
   final String route = PlatformDispatcher.instance.defaultRouteName;
   switch (route) {
@@ -418,6 +419,7 @@ void testMain() {
   }
 }
 
+@pragma('vm:entry-point')
 void main([dynamic sendPort]) {
   if (sendPort is SendPort) {
     final ReceivePort receivePort = ReceivePort();
@@ -495,6 +497,7 @@ Future<void> spawn({
   commandPort.send(<Object>['spawn', port, entrypoint, route]);
 }
 
+@pragma('vm:entry-point')
 void main() async {
   final String route = PlatformDispatcher.instance.defaultRouteName;