diff --git a/yarn-project/txe/src/oracle/txe_oracle.ts b/yarn-project/txe/src/oracle/txe_oracle.ts
index cdd706c457a..3b1740e07fa 100644
--- a/yarn-project/txe/src/oracle/txe_oracle.ts
+++ b/yarn-project/txe/src/oracle/txe_oracle.ts
@@ -22,7 +22,6 @@ import {
   CallContext,
   type ContractInstance,
   type ContractInstanceWithAddress,
-  DEPLOYER_CONTRACT_ADDRESS,
   Gas,
   GasFees,
   GlobalVariables,
@@ -888,7 +887,6 @@ export class TXE implements TypedOracle {
     const executionRequest = new PublicExecutionRequest(callContext, args);
 
     const db = this.baseFork;
-    const worldStateDb = new TXEWorldStateDB(db, new TXEPublicContractDataSource(this), this);
 
     const globalVariables = GlobalVariables.empty();
     globalVariables.chainId = new Fr(await this.node.getChainId());
@@ -896,28 +894,9 @@ export class TXE implements TypedOracle {
     globalVariables.blockNumber = new Fr(this.blockNumber);
     globalVariables.gasFees = new GasFees(1, 1);
 
-    const tempFork = await this.nativeWorldStateService.fork();
-    // Apply current public data writes
-    await tempFork.sequentialInsert(
-      MerkleTreeId.PUBLIC_DATA_TREE,
-      this.publicDataWrites.map(p => p.toBuffer()),
-    );
-
-    // If the contract instance exists in the TXE's world state, make sure its nullifier is present in the tree
-    // so its nullifier check passes.
-    if ((await worldStateDb.getContractInstance(callContext.contractAddress)) !== undefined) {
-      const contractAddressNullifier = await siloNullifier(
-        AztecAddress.fromNumber(DEPLOYER_CONTRACT_ADDRESS),
-        callContext.contractAddress.toField(),
-      );
-      if ((await worldStateDb.getNullifierIndex(contractAddressNullifier)) === undefined) {
-        await tempFork.batchInsert(MerkleTreeId.NULLIFIER_TREE, [contractAddressNullifier.toBuffer()], 0);
-      }
-    }
-
     const simulator = new PublicTxSimulator(
-      tempFork,
-      new TXEWorldStateDB(tempFork, new TXEPublicContractDataSource(this), this),
+      db,
+      new TXEWorldStateDB(db, new TXEPublicContractDataSource(this), this),
       globalVariables,
     );
 
@@ -954,7 +933,6 @@ export class TXE implements TypedOracle {
       ),
     );
 
-    await tempFork.close();
     return Promise.resolve(result);
   }
 
diff --git a/yarn-project/txe/src/txe_service/txe_service.ts b/yarn-project/txe/src/txe_service/txe_service.ts
index 245bb7e7b5d..2dfe839d3e7 100644
--- a/yarn-project/txe/src/txe_service/txe_service.ts
+++ b/yarn-project/txe/src/txe_service/txe_service.ts
@@ -1,6 +1,7 @@
 import { SchnorrAccountContractArtifact } from '@aztec/accounts/schnorr';
 import { MerkleTreeId, SimulationError } from '@aztec/circuit-types';
 import {
+  DEPLOYER_CONTRACT_ADDRESS,
   Fr,
   FunctionSelector,
   PublicDataWrite,
@@ -8,7 +9,7 @@ import {
   computePartialAddress,
   getContractInstanceFromDeployParams,
 } from '@aztec/circuits.js';
-import { computePublicDataTreeLeafSlot } from '@aztec/circuits.js/hash';
+import { computePublicDataTreeLeafSlot, siloNullifier } from '@aztec/circuits.js/hash';
 import { type ContractArtifact, NoteSelector } from '@aztec/foundation/abi';
 import { AztecAddress } from '@aztec/foundation/aztec-address';
 import { type Logger } from '@aztec/foundation/log';
@@ -115,6 +116,11 @@ export class TXEService {
       deployer: AztecAddress.ZERO,
     });
 
+    // Emit deployment nullifier
+    (this.typedOracle as TXE).addSiloedNullifiersFromPublic([
+      await siloNullifier(AztecAddress.fromNumber(DEPLOYER_CONTRACT_ADDRESS), instance.address.toField()),
+    ]);
+
     this.logger.debug(`Deployed ${artifact.name} at ${instance.address}`);
     await (this.typedOracle as TXE).addContractInstance(instance);
     await (this.typedOracle as TXE).addContractArtifact(artifact);