diff --git a/converter.py b/converter.py
index 8f6e01b8c5ccc3b1cdc389dbd82934dbd35e08a3..8f49951b3cce8be3cb67bd1490f6da8c0dbe8e8f 100644
--- a/converter.py
+++ b/converter.py
@@ -45,6 +45,10 @@ class TestConverter(unittest.TestCase):
     def test_convertOne(self):
         res = self.c.convert(1)
         self.assertEqual(res, 'I')
+    
+    def test_convertTwo(self):
+        res = self.c.convert(2)
+        self.assertEqual(res, 'II')
 
 if __name__ == "__main__":
     unittest.main()