diff --git a/Wrap/Swig/libBornAgainSim.i b/Wrap/Swig/libBornAgainSim.i
index 47c19bc06d86d166cd9281226ead17acdbf210ce..f767517155bf44e6ad931140a3cb0248791eec68 100644
--- a/Wrap/Swig/libBornAgainSim.i
+++ b/Wrap/Swig/libBornAgainSim.i
@@ -140,7 +140,7 @@ class SimulationBuilderWrapper(PyBuilderCallback):
 
     def create_par_dict(self, pars):
         """
-        Convertion of ba.Parameters to Python dictionary
+        Conversion of ba.Parameters to Python dictionary
         """
         pars_dict = dict()
         for index, p in enumerate(pars):