diff --git a/tests/test_interval_item.py b/tests/test_interval_item.py
index cc41234..c9d92f1 100644
--- a/tests/test_interval_item.py
+++ b/tests/test_interval_item.py
@@ -8,13 +8,14 @@
 mytextgrid_path = str(pathlib.Path(__file__).parent.parent.joinpath('src'))
 sys.path.insert(0, mytextgrid_path)
 from mytextgrid.core.interval_tier import Interval
+from mytextgrid.core.interval_tier import IntervalTier
 
 class TestInterval(unittest.TestCase):
 
     def test_init(self):
         start = Decimal('5.145')
         end = Decimal('6.324')
-        interval = Interval(start, end, 'perro')
+        interval = Interval(IntervalTier(), start, end, 'perro')
 
         self.assertEqual(interval.xmin, start)
         self.assertEqual(interval.xmax, end)
diff --git a/tests/test_point_item.py b/tests/test_point_item.py
index ddd4d60..db7da43 100644
--- a/tests/test_point_item.py
+++ b/tests/test_point_item.py
@@ -6,6 +6,7 @@
 mytextgrid_path = str(pathlib.Path(__file__).parent.parent.joinpath('src'))
 sys.path.insert(0, mytextgrid_path)
 from mytextgrid.core.point_tier import Point
+from mytextgrid.core.point_tier import PointTier
 getcontext().prec = 16
 
 class Testpoint(unittest.TestCase):
@@ -14,7 +15,7 @@ class Testpoint(unittest.TestCase):
     """
     def setUp(self):
         time = Decimal('5.145')
-        self.point = Point(time, 'H')
+        self.point = Point(PointTier(), time, 'H')
 
     def test_init(self):
         point = self.point