diff --git a/scripts/ci-proof.mjs b/scripts/ci-proof.mjs
index 9a08ad1b..bd4a7f42 100644
--- a/scripts/ci-proof.mjs
+++ b/scripts/ci-proof.mjs
@@ -199,7 +199,8 @@ export function evaluateCiProof({ run, proof, jobs = [], reuseRuns = new Map(),
       if (!executedCheckIsGreen(id, jobs)) return result('failed', `${id}: claimed execution is absent, incomplete or not green`);
       continue;
     }
-    if (claim.mode !== 'reused' || !['smoke', 'golden', 'performance_smoke', 'backend'].includes(id))
+    if (claim.mode !== 'reused'
+      || !['smoke', 'golden', 'performance_smoke', 'geometry_parity', 'backend'].includes(id))
       return result('failed', `${id}: unsupported proof mode ${claim.mode || 'missing'}`);
     const reuse = claim.reuse || {};
     if (!/^[0-9a-f]{64}$/.test(reuse.key || '') || !/^[0-9a-f]{40}$/.test(reuse.sourceSha || '')
diff --git a/test/ci-proof.test.mjs b/test/ci-proof.test.mjs
index ae319993..2158f9f7 100644
--- a/test/ci-proof.test.mjs
+++ b/test/ci-proof.test.mjs
@@ -154,6 +154,24 @@ test('#541 AC: reuse needs a content key, marker source SHA/run and the successf
   assert.equal(evaluateCiProof({ ...fixture, proof: badKey, policy: CI_PROOF_POLICIES.release }).status, 'failed');
 });
 
+test('#548: geometry parity reuse is accepted only with a verified source job', () => {
+  const fixture = proofFixture();
+  fixture.proof.checks.geometry_parity = {
+    mode: 'reused', result: 'success',
+    reuse: { key: 'e'.repeat(64), sourceRun: 78, sourceAttempt: 2, sourceSha: 'f'.repeat(40) },
+  };
+  fixture.proof.executedChecks = fixture.proof.executedChecks.filter((id) => id !== 'geometry_parity');
+  fixture.proof.reusedChecks = ['geometry_parity'];
+  fixture.jobs = fixture.jobs.filter((job) => job.name !== names.geometryParity);
+  fixture.reuseRuns.set('78:2', {
+    run: { id: 78, run_attempt: 2, status: 'completed', conclusion: 'success', head_sha: 'f'.repeat(40) },
+    jobs: [success(names.geometryParity)],
+  });
+
+  assert.equal(evaluateCiProof({ ...fixture, policy: CI_PROOF_POLICIES.release }).status, 'green');
+  assert.equal(evaluateCiProof({ ...fixture, reuseRuns: new Map(), policy: CI_PROOF_POLICIES.release }).status, 'failed');
+});
+
 test('#541: reuse marker parser fails closed', () => {
   assert.deepEqual(parseReuseMarker(
     `golden прогнана успешно\nSHA: ${SHA}\nпрогон: https://github.com/x/y/actions/runs/123\nпопытка: 4\n`,