diff --git a/python-package/xgboost/sklearn.py b/python-package/xgboost/sklearn.py
index 4e3251f81..0a19d61c5 100644
--- a/python-package/xgboost/sklearn.py
+++ b/python-package/xgboost/sklearn.py
@@ -80,9 +80,9 @@ class XGBModel(XGBModelBase):
     colsample_bylevel : float
         Subsample ratio of columns for each split, in each level.
     reg_alpha : float (xgb's alpha)
-        L2 regularization term on weights
-    reg_lambda : float (xgb's lambda)
         L1 regularization term on weights
+    reg_lambda : float (xgb's lambda)
+        L2 regularization term on weights
     scale_pos_weight : float
         Balancing of positive and negative weights.