diff --git a/tests/test_post_messages.py b/tests/test_post_messages.py
index bed4ca9a5..12051d8bd 100644
--- a/tests/test_post_messages.py
+++ b/tests/test_post_messages.py
@@ -122,7 +122,7 @@ def test_main_missing_message_file(tmpdir):
         ]
         with pytest.raises(SystemExit) as excinfo:
             main(args)
-            assert "message file not-existing does not exisit" in str(
+            assert "message file not-existing does not exist" in str(
                 excinfo.value,
             )