diff --git a/tools/simulators/test_sim.cpp b/tools/simulators/test_sim.cpp
index de70bf7..4b1a436 100644
--- a/tools/simulators/test_sim.cpp
+++ b/tools/simulators/test_sim.cpp
@@ -19,9 +19,10 @@ p_slider("slider", "Slider", Color(Color::White), Color(Color::Black), 0, 100, 5
 void Test_Sim::timer()
 {
     // Timer function
-    // p_button.click();
-    // p_combobox.set_selected(1);
-    // p_checkbox.toggle_selected("Option 2");
-    // p_slider.set_value(75);
 }
 
+void Test_Sim::run_at_startup()
+{
+    // Run at startup
+    std::cout << "Test_Sim started" << std::endl;
+}
diff --git a/tools/simulators/test_sim.hpp b/tools/simulators/test_sim.hpp
index 844d6db..8b286ca 100644
--- a/tools/simulators/test_sim.hpp
+++ b/tools/simulators/test_sim.hpp
@@ -5,6 +5,7 @@ class Test_Sim : public Simulator_base {
     public:
         Test_Sim();
         void timer() override;
+        void run_at_startup() override;
     private:
         UI_button p_button;
         UI_combobox p_combobox;