diff --git a/tests/system_tests/test_system_handling_non_standard_behavior.py b/tests/system_tests/test_system_handling_non_standard_behavior.py
index 8b0e913..162a407 100644
--- a/tests/system_tests/test_system_handling_non_standard_behavior.py
+++ b/tests/system_tests/test_system_handling_non_standard_behavior.py
@@ -101,7 +101,7 @@ class TestSystemHandlerNormalWork(unittest.TestCase):
 
         output = mock_stdout.getvalue()
 
-        self.assertIn('\nUndefined or incoct input flag: --port 132\n', output)
+        self.assertIn('\nUndefined or incorrect input flag: --port 132\n', output)
 
 
     @patch("builtins.input", side_effect=["test", "some", "q"])