diff --git a/python-package/lightgbm/sklearn.py b/python-package/lightgbm/sklearn.py
index 630ae522d8e6..ca44721fae85 100644
--- a/python-package/lightgbm/sklearn.py
+++ b/python-package/lightgbm/sklearn.py
@@ -199,7 +199,7 @@ def __init__(self, boosting_type="gbdt", num_leaves=31, max_depth=-1,
         n_classes_ : int
             The number of classes (only for classification problem).
         best_score_ : dict or None
-            The best score of fitted model if `early_stopping_rounds` has been specified.
+            The best score of fitted model.
         best_iteration_ : int or None
             The best iteration of fitted model if `early_stopping_rounds` has been specified.
         objective_ : string or callable