diff --git a/tests/conftest.py b/tests/conftest.py
index 75acd9c..c5e9ed4 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -15,13 +15,10 @@ BACKENDS = ["cutensornet"]
 
 def get_backend(backend_name):
 
-    from qibotn.backends.qmatchatea import QMatchaTeaBackend
     from qibotn.backends.cutensornet import CuTensorNet
+    from qibotn.backends.qmatchatea import QMatchaTeaBackend
 
-    NAME2BACKEND = {
-        "qmatchatea": QMatchaTeaBackend,
-        "cutensornet": CuTensorNet
-    }
+    NAME2BACKEND = {"qmatchatea": QMatchaTeaBackend, "cutensornet": CuTensorNet}
 
     return NAME2BACKEND[backend_name]()
 
diff --git a/tests/test_cuquantum_cutensor_backend.py b/tests/test_cuquantum_cutensor_backend.py
index d5b2ffb..01d8d6e 100644
--- a/tests/test_cuquantum_cutensor_backend.py
+++ b/tests/test_cuquantum_cutensor_backend.py
@@ -1,4 +1,5 @@
 import math
+
 import cupy as cp
 import pytest
 import qibo