diff --git a/mne/epochs.py b/mne/epochs.py
index e525ce2f4c5..a0fcd46de5e 100644
--- a/mne/epochs.py
+++ b/mne/epochs.py
@@ -825,9 +825,8 @@ def _reject_setup(self, reject, flat):
                     continue
                 else:
                     raise ValueError(
-                        '%s value must be a number >= 0 or a valid function,'
-                        'not "%s"'
-                        % (kind, val)
+                        "%s value must be a number >= 0 or a valid function,"
+                        'not "%s"' % (kind, val)
                     )
 
         # now check to see if our rejection and flat are getting more
diff --git a/tutorials/preprocessing/20_rejecting_bad_data.py b/tutorials/preprocessing/20_rejecting_bad_data.py
index bc7f4bba796..dde24ab38b6 100644
--- a/tutorials/preprocessing/20_rejecting_bad_data.py
+++ b/tutorials/preprocessing/20_rejecting_bad_data.py
@@ -374,8 +374,7 @@
     tmin=0,
     tmax=1,
     baseline=None,
-    reject=dict(
-        eeg=lambda x: True if (np.max(x, axis=1) > 1e-2).any() else False),
+    reject=dict(eeg=lambda x: True if (np.max(x, axis=1) > 1e-2).any() else False),
     preload=True,
 )
 epochs.plot(scalings=dict(eeg=50e-5))
@@ -396,8 +395,7 @@
     tmin=0,
     tmax=1,
     baseline=None,
-    reject=dict(
-        eeg=lambda x: True if (np.median(x, axis=1) > 1e-4).any() else False),
+    reject=dict(eeg=lambda x: True if (np.median(x, axis=1) > 1e-4).any() else False),
     preload=True,
 )
 epochs.plot(scalings=dict(eeg=50e-5))