diff --git a/tests/test_process.py b/tests/test_process.py
index 493fc8f..feb1833 100644
--- a/tests/test_process.py
+++ b/tests/test_process.py
@@ -126,7 +126,7 @@ class TestProcessOnEmptyDir(TempDirTestCase):
         with self.assertRaises(subprocess.CalledProcessError) as cm:
             runner('status', '-sb')
         self.assertIn(
-            "fatal: Not a git repository",
+            "fatal: not a git repository",
             cm.exception.stderr,
         )