diff --git a/tests/message/unittest_message_definition.py b/tests/message/unittest_message_definition.py
index 13ec7adae..6bf7c8b53 100644
--- a/tests/message/unittest_message_definition.py
+++ b/tests/message/unittest_message_definition.py
@@ -89,6 +89,15 @@ class TestMessagesDefinition(object):
         expected = "[MessageDefinition:msg-symbol-one (W1234), MessageDefinition:msg-symbol-two (W1235)]"
         assert str(FalseChecker().messages) == expected
 
+    def test_str(self):
+        msg = self.get_message_definition()
+        str_msg = str(msg)
+        assert "W1234" in str_msg
+        assert "msg-symbol" in str_msg
+        expected = """MessageDefinition:msg-symbol-one (W1234):
+message one msg description"""
+        assert str(FalseChecker().messages[0]) == expected
+
     def test_format_help(self):
         msg = self.get_message_definition()
         major = sys.version_info.major