diff --git a/examples/can_unique.py b/examples/can_unique.py
index 0b94076..c8dd72a 100755
--- a/examples/can_unique.py
+++ b/examples/can_unique.py
@@ -94,7 +94,6 @@ class Info():
         message.zeros[i] = message.zeros[i] | ( (~int(bytes[i])) & 0xff)
 
 
-
 def PrintUnique(interesting_file, background_files):
   background = Info()
   for background_file in background_files:
diff --git a/tests/safety/test_gm.py b/tests/safety/test_gm.py
index 5de9590..0a1fca5 100644
--- a/tests/safety/test_gm.py
+++ b/tests/safety/test_gm.py
@@ -180,7 +180,6 @@ class TestGmSafety(common.PandaSafetyTest):
       self.safety.set_torque_driver(-MAX_STEER * sign, -MAX_STEER * sign)
       self.assertFalse(self._tx(self._torque_msg((MAX_STEER - MAX_RATE_DOWN + 1) * sign)))
 
-
   def test_realtime_limits(self):
     self.safety.set_controls_allowed(True)
 
@@ -203,7 +202,6 @@ class TestGmSafety(common.PandaSafetyTest):
       self.assertTrue(self._tx(self._torque_msg(sign * (MAX_RT_DELTA - 1))))
       self.assertTrue(self._tx(self._torque_msg(sign * (MAX_RT_DELTA + 1))))
 
-
   def test_tx_hook_on_pedal_pressed(self):
     for pedal in ['brake', 'gas']:
       if pedal == 'brake':
diff --git a/tests/safety/test_hyundai.py b/tests/safety/test_hyundai.py
index 9f17325..8da310f 100644
--- a/tests/safety/test_hyundai.py
+++ b/tests/safety/test_hyundai.py
@@ -156,7 +156,6 @@ class TestHyundaiSafety(common.PandaSafetyTest):
       self.safety.set_torque_driver(-MAX_STEER * sign, -MAX_STEER * sign)
       self.assertFalse(self._tx(self._torque_msg((MAX_STEER - MAX_RATE_DOWN + 1) * sign)))
 
-
   def test_realtime_limits(self):
     self.safety.set_controls_allowed(True)
 
@@ -179,7 +178,6 @@ class TestHyundaiSafety(common.PandaSafetyTest):
       self.assertTrue(self._tx(self._torque_msg(sign * (MAX_RT_DELTA - 1))))
       self.assertTrue(self._tx(self._torque_msg(sign * (MAX_RT_DELTA + 1))))
 
-
   def test_spam_cancel_safety_check(self):
     RESUME_BTN = 1
     SET_BTN = 2
diff --git a/tests/safety/test_subaru.py b/tests/safety/test_subaru.py
index 08bb25b..6984746 100644
--- a/tests/safety/test_subaru.py
+++ b/tests/safety/test_subaru.py
@@ -142,7 +142,6 @@ class TestSubaruSafety(common.PandaSafetyTest):
       self._set_torque_driver(-max_driver_torque * sign, -max_driver_torque * sign)
       self.assertFalse(self._tx(self._torque_msg((MAX_STEER - MAX_RATE_DOWN + 1) * sign)))
 
-
   def test_realtime_limits(self):
     self.safety.set_controls_allowed(True)