diff --git a/python/sdk/src/deepseek_harness/api.py b/python/sdk/src/deepseek_harness/api.py
index 1dc8598955..6a18068cbd 100644
--- a/python/sdk/src/deepseek_harness/api.py
+++ b/python/sdk/src/deepseek_harness/api.py
@@ -23,7 +23,6 @@ class DeepSeekHarnessConfig:
     model: str = "deepseek-v4-flash"
     reasoning_effort: str | None = None
     max_tokens: int | None = None
-    approval_requests: bool = False
     cwd: str | None = None
     runtime_cwd: str | None = None
     dsh_bin: str | None = None
@@ -36,6 +35,7 @@ class DeepSeekHarnessConfig:
     shutdown_timeout_seconds: float | None = 1.0
     base_url: str | None = None
     api_key: str | None = None
+    approval_requests: bool = False
 
 
 @dataclass(slots=True)
diff --git a/python/sdk/tests/test_approval.py b/python/sdk/tests/test_approval.py
index 0ebf631254..27767a0fc4 100644
--- a/python/sdk/tests/test_approval.py
+++ b/python/sdk/tests/test_approval.py
@@ -7,7 +7,7 @@ from pathlib import Path
 import pytest
 from pydantic import ValidationError
 
-from deepseek_harness import ApprovalRequestParams, ApprovalRequestResult, HarnessClient
+from deepseek_harness import ApprovalRequestParams, ApprovalRequestResult, DeepSeekHarnessConfig, HarnessClient
 
 
 @pytest.mark.parametrize("enabled", [False, True])
@@ -47,3 +47,9 @@ for line in sys.stdin:
 def test_approval_result_rejects_unrecognized_grants() -> None:
     with pytest.raises(ValidationError):
         ApprovalRequestResult(outcome="allow-always")
+
+
+def test_approval_opt_in_preserves_existing_config_positional_arguments() -> None:
+    config = DeepSeekHarnessConfig("mock", "model", None, None, "/workspace")
+    assert config.cwd == "/workspace"
+    assert config.approval_requests is False