diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f35df46..5f7b9f6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,6 @@ jobs:
       - uses: psf/black@stable
         with:
           options: "--check"
-       pylint unit_of_time
   test:
     name: run tests
     runs-on: ubuntu-latest
diff --git a/timetest.py b/timetest.py
index 48a655e..c871973 100644
--- a/timetest.py
+++ b/timetest.py
@@ -110,6 +110,8 @@ def test_to_int(self):
                     self.assertIn(dt, tu)
                     self.assertIn((dt, dt), tu)
                     self.assertIn((tu.first_date, tu.last_date), tu)
+                    with self.assertRaises(TypeError):
+                        self.assertIn((1958, 2019), tu)
                     with self.assertRaises(TypeError):
                         self.assertIn(1425, tu)
                     self.assertIn(dt, list(tu))
@@ -151,8 +153,12 @@ def test_to_int(self):
                     self.assertEqual(tu.previous.previous.previous, 3 << tu)
                     self.assertLess(tu.last_date, tu.next.first_date)
                     self.assertLess(tu.previous.last_date, tu.first_date)
-                    self.assertEqual((tu.next.first_date - tu.last_date), timedelta(days=1))
-                    self.assertEqual((tu.first_date - tu.previous.last_date), timedelta(days=1))
+                    self.assertEqual(
+                        (tu.next.first_date - tu.last_date), timedelta(days=1)
+                    )
+                    self.assertEqual(
+                        (tu.first_date - tu.previous.last_date), timedelta(days=1)
+                    )
 
     def test_hierarchy(self):
         """
diff --git a/unit_of_time/__init__.py b/unit_of_time/__init__.py
index 3ce1503..7421d21 100644
--- a/unit_of_time/__init__.py
+++ b/unit_of_time/__init__.py
@@ -36,7 +36,9 @@ def unit_register(cls):
         result = TimeunitKindMeta._registered
         if result is None:
             result = {
-                k.kind_int: k for k in TimeunitKindMeta._pre_registered if k.kind_int is not None
+                k.kind_int: k
+                for k in TimeunitKindMeta._pre_registered
+                if k.kind_int is not None
             }
             TimeunitKindMeta._registered = result
         return result