diff --git a/test_module.py b/test_module.py
index 2e6006c..5e90154 100644
--- a/test_module.py
+++ b/test_module.py
@@ -3,7 +3,7 @@ from time_calculator import add_time
 
 
 class UnitTests(unittest.TestCase):
-
+    maxDiff = None
     def test_same_period(self):
         actual = add_time("3:30 PM", "2:12")
         expected = "5:42 PM"