diff --git a/tests.py b/tests.py
index 43ded0a..9ac0569 100644
--- a/tests.py
+++ b/tests.py
@@ -6,7 +6,7 @@ from main import is_hello_world
 class TestProject(unittest.TestCase):
 
     def test_when_text_is_hello_world_with_maj_then_work(self):
-        self.assertTrue(is_hello_world("Hello World"))
+        self.assertTrue(is_hello_world("Hello world"))
 
 
 if __name__ == '__main__':