diff --git a/tests/test_cli_compile.py b/tests/test_cli_compile.py
index b8d3cbd6f..39d0bbada 100644
--- a/tests/test_cli_compile.py
+++ b/tests/test_cli_compile.py
@@ -2603,7 +2603,8 @@ def test_error_in_pyproject_toml(fake_dists, runner, make_module, capfd):
         cli, ["-n", "--no-build-isolation", "-v", "--find-links", fake_dists, meta_path]
     )
     assert out.exit_code == 2, out.stderr
-    assert "`project` must contain ['name'] properties" in capfd.readouterr().err
+    captured = capfd.readouterr()
+    assert "`project` must contain ['name'] properties" in captured.err
 
 
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