diff --git a/rocketpy/simulation/monte_carlo.py b/rocketpy/simulation/monte_carlo.py
index 32dfb2af5..5e7322d7e 100644
--- a/rocketpy/simulation/monte_carlo.py
+++ b/rocketpy/simulation/monte_carlo.py
@@ -167,6 +167,7 @@ def simulate(
         n_workers : int, optional
             Number of workers to be used if ``parallel=True``. If None, the
             number of workers will be equal to the number of CPUs available.
+            A minimum of 2 workers is required for parallel mode.
             Default is None.
 
         Returns