diff --git a/{{cookiecutter.out_dir}}/lib/main.dart b/{{cookiecutter.out_dir}}/lib/main.dart
index 4e35ab8..7f56a9a 100644
--- a/{{cookiecutter.out_dir}}/lib/main.dart
+++ b/{{cookiecutter.out_dir}}/lib/main.dart
@@ -23,7 +23,7 @@ final hideLoadingPage =
 const outLogFilename = "out.log";
 const errorExitCode = 100;
 
-var createControlFactories = [
+List<CreateControlFactory> createControlFactories = [
 {% for dep in cookiecutter.flutter.dependencies %}
 {{ dep }}.createControl,
 {% endfor %}