diff --git a/pandas/tests/series/test_validate.py b/pandas/tests/series/test_validate.py
index 6327e265d8c1e6..134fa0a38f618c 100644
--- a/pandas/tests/series/test_validate.py
+++ b/pandas/tests/series/test_validate.py
@@ -23,9 +23,6 @@ def test_validate_bool_args(self):
             with pytest.raises(ValueError):
                 self.s.sort_index(inplace=value)
 
-            with pytest.raises(ValueError):
-                self.s.sort_index(inplace=value)
-
             with pytest.raises(ValueError):
                 self.s.rename(inplace=value)