diff --git a/tests/test_codex_models.py b/tests/test_codex_models.py
index e6cc2fde..40a447a1 100644
--- a/tests/test_codex_models.py
+++ b/tests/test_codex_models.py
@@ -30,6 +30,14 @@ def test_get_codex_model_ids_prioritizes_default_and_cache(tmp_path, monkeypatch
     assert "gpt-5-hidden-codex" not in models
 
 
+def test_setup_wizard_codex_import_resolves():
+    """Regression test for #712: setup.py must import the correct function name."""
+    # This mirrors the exact import used in hermes_cli/setup.py line 873.
+    # A prior bug had 'get_codex_models' (wrong) instead of 'get_codex_model_ids'.
+    from hermes_cli.codex_models import get_codex_model_ids as setup_import
+    assert callable(setup_import)
+
+
 def test_get_codex_model_ids_falls_back_to_curated_defaults(tmp_path, monkeypatch):
     codex_home = tmp_path / "codex-home"
     codex_home.mkdir(parents=True, exist_ok=True)