diff --git a/tests/internal/test_warnings.py b/tests/internal/test_warnings.py
index 9ce955b74..96ec96b40 100644
--- a/tests/internal/test_warnings.py
+++ b/tests/internal/test_warnings.py
@@ -102,8 +102,8 @@ def add(cls, x, y):
 
     expected_warning = (
         r"Call to deprecated .*(method|function).* do_plus\."
-        " \(Usage of this legacy .*(method|function).* is deprecated\. Use `\.add` instead\.\)"
-        " -- Deprecated since version v1\.2\."
+        r" \(Usage of this legacy .*(method|function).* is deprecated\. Use `\.add` instead\.\)"
+        r" -- Deprecated since version v1\.2\."
     )
 
     with pytest.warns(UserDeprecationWarning, match=expected_warning):