diff --git a/src/qibotn/quimb.py b/src/qibotn/quimb.py
index 5f5721b..50c25ce 100644
--- a/src/qibotn/quimb.py
+++ b/src/qibotn/quimb.py
@@ -3,7 +3,7 @@ import quimb.tensor as qtn
 from qibo.models import Circuit as QiboCircuit
 
 
-def from_qibo(circuit: QiboCircuit, is_mps: False, psi0=None, method='svd', 
+def from_qibo(circuit: QiboCircuit, is_mps: False, psi0=None, method='svd',
               cutoff=1e-6, cutoff_mode='abs'):
     nqubits = circuit.nqubits
     gate_opt = {}
@@ -12,7 +12,7 @@ def from_qibo(circuit: QiboCircuit, is_mps: False, psi0=None, method='svd',
         gate_opt["method"] = method
         gate_opt["cutoff"] = cutoff
         gate_opt["cutoff_mode"] = cutoff_mode
-    else:    
+    else:
         tncirc = qtn.Circuit(nqubits, psi0=psi0)
 
     for gate in circuit.queue:
diff --git a/tests/test_qasm_quimb_backend.py b/tests/test_qasm_quimb_backend.py
index 3fd756e..f46fbc6 100644
--- a/tests/test_qasm_quimb_backend.py
+++ b/tests/test_qasm_quimb_backend.py
@@ -10,7 +10,8 @@ from qibo.models import QFT
 
 
 def create_init_state(nqubits):
-    init_state = np.random.random(2**nqubits) + 1j * np.random.random(2**nqubits)
+    init_state = np.random.random(2**nqubits) + \
+        1j * np.random.random(2**nqubits)
     init_state = init_state / np.sqrt((np.abs(init_state) ** 2).sum())
     return init_state
 
@@ -42,7 +43,8 @@ def test_eval(nqubits: int, tolerance: float):
     init_state_tn = copy.deepcopy(init_state)
 
     # Test qibo
-    qibo.set_backend(backend=config.qibo.backend, platform=config.qibo.platform)
+    qibo.set_backend(backend=config.qibo.backend,
+                     platform=config.qibo.platform)
     qibo_time, (qibo_circ, result_sv) = time(
         lambda: qibo_qft(nqubits, init_state, swaps=True)
     )