diff --git a/yarn-project/validator-client/src/validator.integration.test.ts b/yarn-project/validator-client/src/validator.integration.test.ts
index 37f6252475eb..7f0f791118bd 100644
--- a/yarn-project/validator-client/src/validator.integration.test.ts
+++ b/yarn-project/validator-client/src/validator.integration.test.ts
@@ -26,7 +26,7 @@ import { type L1RollupConstants, getTimestampForSlot } from '@aztec/stdlib/epoch
 import { GasFees } from '@aztec/stdlib/gas';
 import { tryStop } from '@aztec/stdlib/interfaces/server';
 import { computeInHashFromL1ToL2Messages } from '@aztec/stdlib/messaging';
-import type { BlockProposal } from '@aztec/stdlib/p2p';
+import { type BlockProposal, CheckpointProposal } from '@aztec/stdlib/p2p';
 import { mockTx } from '@aztec/stdlib/testing';
 import type { PublicDataTreeLeaf } from '@aztec/stdlib/trees';
 import { BlockHeader, type CheckpointGlobalVariables, Tx } from '@aztec/stdlib/tx';
@@ -522,12 +522,13 @@ describe('ValidatorClient Integration', () => {
         () => buildTxs(2),
       );
 
-      // Create a checkpoint proposal with wrong archive root
-      const badProposal = await proposer.validator.createCheckpointProposal(
+      // Create a checkpoint proposal with wrong archive root directly, bypassing the
+      // validator's anti-equivocation guard (which prevents two proposals for the same slot)
+      const badProposal = await CheckpointProposal.createProposalFromSigner(
         checkpoint.header,
         Fr.random(), // Wrong archive root
         undefined,
-        proposerSigner.address,
+        payload => Promise.resolve(proposerSigner.sign(payload)),
       );
 
       await attestorValidateBlocks(blocks);