scikit-learn
diff --git a/‎sklearn/ensemble/_gradient_boosting.c
+829-652 b/‎sklearn/ensemble/_gradient_boosting.c
+829-652
diff --git a/‎sklearn/ensemble/_gradient_boosting.pyx
+3-1 b/‎sklearn/ensemble/_gradient_boosting.pyx
+3-1
diff --git a/‎sklearn/ensemble/gradient_boosting.py
+2-2 b/‎sklearn/ensemble/gradient_boosting.py
+2-2
@@ -12,7 +12,9 @@ import numpy as np
 cimport numpy as np
 np.import_array()
 
-from sklearn.tree._tree cimport Tree, Node
+from sklearn.tree._tree cimport Node
+from sklearn.tree._tree cimport Tree
+
 
 ctypedef np.int32_t int32
 ctypedef np.float64_t float64
 
@@ -45,8 +45,8 @@
 
 from ..tree.tree import DecisionTreeRegressor
 from ..tree._tree import DTYPE, TREE_LEAF
-from ..tree._tree import PresortBestSplitter
-from ..tree._tree import FriedmanMSE
+from ..tree._splitter import PresortBestSplitter
+from ..tree._criterion import FriedmanMSE
 
 from ._gradient_boosting import predict_stages
 from ._gradient_boosting import predict_stage