diff --git a/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts b/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts
index 72b655446c0a..c1946457260a 100644
--- a/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts
+++ b/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts
@@ -46,6 +46,9 @@ describe('e2e_voting_contract', () => {
       await wallet.rotateNullifierKeys();
       await crossDelay();
 
+      // We try simulating voting again, but our TX is invalid because it will emit duplicate nullifiers
+      await expect(votingContract.methods.cast_vote(candidate).simulate()).rejects.toThrow('The simulated transaction is unable to be added to state and is invalid.');
+
       // We try voting again, but our TX is dropped due to trying to emit duplicate nullifiers
       await expect(votingContract.methods.cast_vote(candidate).send().wait()).rejects.toThrow(
         'Reason: Tx dropped by P2P node.',