diff --git a/pygam/terms.py b/pygam/terms.py
index f184e002..117584b4 100644
--- a/pygam/terms.py
+++ b/pygam/terms.py
@@ -625,6 +625,7 @@ def __init__(self, feature, n_splines=20, spline_order=3, lam=0.6,
             Type of basis function to use in the term.
 
             'ps' : p-spline basis
+            
             'cp' : cyclic p-spline basis, useful for building periodic functions.
                    by default, the maximum and minimum of the feature values
                    are used to determine the function's period.