diff --git a/sortedl1/estimators.py b/sortedl1/estimators.py
index 7a49592..5cfeff7 100644
--- a/sortedl1/estimators.py
+++ b/sortedl1/estimators.py
@@ -1,3 +1,5 @@
+"""Estimators for SLOPE."""
+
 import numpy as np
 from _sortedl1 import fit_slope_dense, fit_slope_sparse
 from scipy import sparse
@@ -7,7 +9,7 @@
 
 class Slope(BaseEstimator, RegressorMixin):
     """
-    Sorted L-One Penalized Estimation
+    Sorted L-One Penalized Estimation.
 
     Parameters
     ----------