diff --git a/pyworld2/world2.py b/pyworld2/world2.py
index 27c802a..5f2dd7c 100644
--- a/pyworld2/world2.py
+++ b/pyworld2/world2.py
@@ -206,7 +206,7 @@ def __init__(self, year_min=1900, year_max=2100, dt=0.2):
         year_max : int, optional
             end year of the simulation. The default is 2100.
         dt : float, optional
-            time step of the numerica integration [year]. The default is 0.2.
+            time step of the numerical integration [year]. The default is 0.2.
 
         """
         self.year_min = year_min