diff --git a/pts/model/tempflow/tempflow_estimator.py b/pts/model/tempflow/tempflow_estimator.py
index 75552de..2dbc848 100644
--- a/pts/model/tempflow/tempflow_estimator.py
+++ b/pts/model/tempflow/tempflow_estimator.py
@@ -105,7 +105,7 @@ class TempFlowEstimator(PTSEstimator):
         self.pick_incomplete = pick_incomplete
         self.scaling = scaling
 
-     def create_transformation(self) -> Transformation:
+    def create_transformation(self) -> Transformation:
         return Chain(
             [
                 AsNumpyArray(