diff --git a/flatland/envs/observations.py b/flatland/envs/observations.py
index 15d42d793b50dabe3627f6a4e601ca614f0e68b0..2f8ffb80858809a7e601a250265e7336786003b2 100644
--- a/flatland/envs/observations.py
+++ b/flatland/envs/observations.py
@@ -22,8 +22,6 @@ class TreeObsForRailEnv(ObservationBuilder):
     For details about the features in the tree observation see the get() function.
     """
 
-
-
     def __init__(self, max_depth, predictor=None):
         super().__init__()
         self.max_depth = max_depth