diff --git a/tests/network/network_simplification/test_network_graph_simplificator.py b/tests/network/network_simplification/test_network_graph_simplificator.py
index f2b05c1a9..d1b496d67 100644
--- a/tests/network/network_simplification/test_network_graph_simplificator.py
+++ b/tests/network/network_simplification/test_network_graph_simplificator.py
@@ -1,6 +1,7 @@
+import math
 import random
 from typing import Callable, Iterator
-import math
+
 import networkx as nx
 import numpy as np
 import pytest
diff --git a/tests/network/test_networks_utils.py b/tests/network/test_networks_utils.py
index d0fc9f635..a0cb1c3ac 100644
--- a/tests/network/test_networks_utils.py
+++ b/tests/network/test_networks_utils.py
@@ -329,6 +329,7 @@ def test_with_valid_graph(self):
         assert _return_graph == _graph
         assert _return_id == _find_id
 
+
 class TestNetworksUtils:
     def test_get_normalized_geojson_polygon_from_geojson(self):
         # 1. Define test data.