diff --git a/mne_connectivity/effective.py b/mne_connectivity/effective.py
index 1c3bab0e..dfe4d820 100644
--- a/mne_connectivity/effective.py
+++ b/mne_connectivity/effective.py
@@ -7,7 +7,11 @@
 import numpy as np
 from mne.utils import logger, verbose
 
-from .base import SpectralConnectivity, SpectroTemporalConnectivity, EpochSpectralConnectivity
+from .base import (
+    EpochSpectralConnectivity,
+    SpectralConnectivity,
+    SpectroTemporalConnectivity,
+)
 from .spectral import spectral_connectivity_epochs, spectral_connectivity_time
 from .utils import fill_doc
 
@@ -256,7 +260,7 @@ def phase_slope_index_time(data,
                            fmax=np.inf,
                            mt_bandwidth=None,
                            freqs=None,
-                           n_cycles=7, 
+                           n_cycles=7,
                            padding=0,
                            n_jobs=1,
                            ):
@@ -430,4 +434,4 @@ def phase_slope_index_time(data,
         event_id=event_id,
     )
 
-    return conn
\ No newline at end of file
+    return conn
diff --git a/mne_connectivity/tests/test_effective.py b/mne_connectivity/tests/test_effective.py
index 101fc865..8d6b3c0f 100644
--- a/mne_connectivity/tests/test_effective.py
+++ b/mne_connectivity/tests/test_effective.py
@@ -75,4 +75,4 @@ def test_psi_time():
     )
 
     assert np.all(conn_cwt.get_data() > 0)
-    assert conn_cwt.shape[-1] == n_epochs
\ No newline at end of file
+    assert conn_cwt.shape[-1] == n_epochs