diff --git a/backend/python_examples/realtime_rate_changer.py b/backend/python_examples/realtime_rate_changer.py
index 90d093275..3b13fc811 100644
--- a/backend/python_examples/realtime_rate_changer.py
+++ b/backend/python_examples/realtime_rate_changer.py
@@ -122,7 +122,7 @@ def main():
 
     simulator = build_simple_car_simulator()
 
-    runner = SimulatorRunner(simulator, 0.001, initial_realtime_rate, False)
+    runner = SimulatorRunner(simulator, 0.001, initial_realtime_rate)
 
     rate_changer = RealtimeRateChanger(runner, initial_steps)
 
diff --git a/backend/simulation_runner_py.cc b/backend/simulation_runner_py.cc
index 76be1c160..d55050dfd 100644
--- a/backend/simulation_runner_py.cc
+++ b/backend/simulation_runner_py.cc
@@ -54,11 +54,8 @@ namespace {
 PYBIND11_MODULE(simulation_runner_py, m) {
   py::class_<SimulatorRunner>(m, "SimulatorRunner")
       .def(py::init<unique_ptr<AutomotiveSimulator<double>>, double>())
-      // TODO(basicNew): Add the missing
-      // `unique_ptr<AutomotiveSimulator<double>>, double, double>()`
-      // constructor. Note that this means overloading by type, which I think
-      // will need a custom python constructor.
       .def(py::init<unique_ptr<AutomotiveSimulator<double>>, double, bool>())
+      .def(py::init<unique_ptr<AutomotiveSimulator<double>>, double, double>())
       .def(py::init<unique_ptr<AutomotiveSimulator<double>>, double, double,
                     bool>())
       .def("SetRealtimeRate", &SimulatorRunner::SetRealtimeRate)