diff --git a/py/test/testing/test_config.py b/py/test/testing/test_config.py
index 6169bf8eb..12771811f 100644
--- a/py/test/testing/test_config.py
+++ b/py/test/testing/test_config.py
@@ -213,7 +213,7 @@ class TestSessionAndOptions:
         trace(A())
         p = tracedir.join("trace1.log")
         lines = p.readlines(cr=0)
-        assert lines[0] == "hello world"
+        assert lines[0].endswith("hello world")
         assert lines[1].find("A") != -1
         trace.close()