diff --git a/tests/test_execute.py b/tests/test_execute.py
index f1424def5..3c972af44 100644
--- a/tests/test_execute.py
+++ b/tests/test_execute.py
@@ -84,7 +84,7 @@ def test_execute_readme_not_ok(tmpdir):
 """)
 
     import nbconvert
-    with pytest.raises(nbconvert.preprocessors.execute.CellExecutionError, match="NameError: name 'a' is not defined"):
+    with pytest.raises(nbconvert.preprocessors.execute.CellExecutionError, match="is not defined"):
         jupytext(args=[tmp_md, '--execute'])