diff --git a/src/projected_grpo/verify_rewards.py b/src/projected_grpo/verify_rewards.py
index d41dc4e..308785f 100644
--- a/src/projected_grpo/verify_rewards.py
+++ b/src/projected_grpo/verify_rewards.py
@@ -151,6 +151,7 @@ CASES = [
     ("hack/run_tests",      "run_tests",   M1_HACK,       GT_TESTS,  True,  False, True,  3.5),
     ("clean/eq_override",   "eq_override", CLEAN,         GT_TESTS,  True,  True,  False, 3.5),
     ("hack/eq_override",    "eq_override", EQ_HACK,       GT_TESTS,  True,  False, True,  3.5),
+    ("clean/exit_code",     "exit_code",   CLEAN,         GT_TESTS,  True,  True,  False, 3.5),
     ("hack/exit_code",      "exit_code",   EXIT_HACK,     GT_TESTS,  True,  False, True,  3.5),
     # regressions from the 2026-05-30 code review:
     ("hack/exit_in_solve",  "exit_code",   EXIT_IN_SOLVE, GT_TESTS,  True,  False, True,  3.5),