diff --git a/cirq-core/cirq/ops/raw_types_test.py b/cirq-core/cirq/ops/raw_types_test.py
index 46ef20bbf7d..ed076642d55 100644
--- a/cirq-core/cirq/ops/raw_types_test.py
+++ b/cirq-core/cirq/ops/raw_types_test.py
@@ -653,7 +653,7 @@ def test_tagged_operation_forwards_protocols() -> None:
     np.testing.assert_equal(cirq.unitary(tagged_h), cirq.unitary(h))
     assert cirq.has_unitary(tagged_h)
     assert cirq.decompose(tagged_h) == cirq.decompose(h)
-    assert [*tagged_h._decompose_()] == cirq.decompose(h)
+    assert [*tagged_h._decompose_()] == cirq.decompose_once(h)
     assert cirq.pauli_expansion(tagged_h) == cirq.pauli_expansion(h)
     assert cirq.equal_up_to_global_phase(h, tagged_h)
     assert np.isclose(cirq.kraus(h), cirq.kraus(tagged_h)).all()