diff --git a/rebound/simulation.pyi b/rebound/simulation.pyi
index 51adabd..fcf2e3d 100644
--- a/rebound/simulation.pyi
+++ b/rebound/simulation.pyi
@@ -324,7 +324,7 @@ class Simulation(Structure):
 
     def multiply(self, scalar_pos: float, scalar_vel: float) -> None: ...
 
-    def create_ode(self, length: int, needs_nbody: bool) -> ODE: ...
+    def create_ode(self, length: int, needs_nbody: bool = True) -> ODE: ...
 
     def status(self) -> None: ...