diff --git a/packages/api/src/beacon/routes/beacon/block.ts b/packages/api/src/beacon/routes/beacon/block.ts
index 01b0a12c870e..a36f4505dc5f 100644
--- a/packages/api/src/beacon/routes/beacon/block.ts
+++ b/packages/api/src/beacon/routes/beacon/block.ts
@@ -177,7 +177,7 @@ export type Api = {
 
   publishBlockV2(
     blockOrContents: allForks.SignedBeaconBlock | SignedBlockContents,
-    opts: {broadcastValidation: BroadcastValidation}
+    opts: {broadcastValidation?: BroadcastValidation}
   ): Promise<
     ApiClientResponse<
       {
@@ -204,7 +204,7 @@ export type Api = {
 
   publishBlindedBlockV2(
     blindedBlockOrContents: allForks.SignedBlindedBeaconBlock | SignedBlindedBlockContents,
-    opts: {broadcastValidation: BroadcastValidation}
+    opts: {broadcastValidation?: BroadcastValidation}
   ): Promise<
     ApiClientResponse<
       {
@@ -256,9 +256,9 @@ export type ReqTypes = {
   getBlockHeaders: {query: {slot?: number; parent_root?: string}};
   getBlockRoot: BlockIdOnlyReq;
   publishBlock: {body: unknown};
-  publishBlockV2: {body: unknown; query: {broadcast_validation: string}};
+  publishBlockV2: {body: unknown; query: {broadcast_validation?: string}};
   publishBlindedBlock: {body: unknown};
-  publishBlindedBlockV2: {body: unknown; query: {broadcast_validation: string}};
+  publishBlindedBlockV2: {body: unknown; query: {broadcast_validation?: string}};
   getBlobSidecars: BlockIdOnlyReq;
 };
 
diff --git a/packages/beacon-node/src/api/impl/beacon/blocks/index.ts b/packages/beacon-node/src/api/impl/beacon/blocks/index.ts
index 3e4e04ebc887..e07161c9f266 100644
--- a/packages/beacon-node/src/api/impl/beacon/blocks/index.ts
+++ b/packages/beacon-node/src/api/impl/beacon/blocks/index.ts
@@ -20,7 +20,6 @@ import {ApiModules} from "../../types.js";
 import {resolveBlockId, toBeaconHeaderResponse} from "./utils.js";
 
 type PublishBlockOpts = ImportBlockOpts & {broadcastValidation?: routes.beacon.BroadcastValidation};
-const defaultPublishOpts = {broadcastValidation: routes.beacon.BroadcastValidation.none};
 
 /**
  * Validator clock may be advanced from beacon's clock. If the validator requests a resource in a
@@ -42,7 +41,7 @@ export function getBeaconBlockApi({
 }: Pick<ApiModules, "chain" | "config" | "metrics" | "network" | "db">): ServerApi<routes.beacon.block.Api> {
   const publishBlock: ServerApi<routes.beacon.block.Api>["publishBlock"] = async (
     signedBlockOrContents,
-    opts: PublishBlockOpts = defaultPublishOpts
+    opts: PublishBlockOpts = {}
   ) => {
     const seenTimestampSec = Date.now() / 1000;
     let blockForImport: BlockInput, signedBlock: allForks.SignedBeaconBlock, signedBlobs: deneb.SignedBlobSidecars;
@@ -70,7 +69,7 @@ export function getBeaconBlockApi({
 
     // check what validations have been requested before broadcasting and publishing the block
     // TODO: add validation time to metrics
-    const broadcastValidation = opts.broadcastValidation ?? defaultPublishOpts.broadcastValidation;
+    const broadcastValidation = opts.broadcastValidation ?? routes.beacon.BroadcastValidation.none;
     switch (broadcastValidation) {
       case routes.beacon.BroadcastValidation.none:
         break;
@@ -137,7 +136,7 @@ export function getBeaconBlockApi({
 
   const publishBlindedBlock: ServerApi<routes.beacon.block.Api>["publishBlindedBlock"] = async (
     signedBlindedBlockOrContents,
-    opts: PublishBlockOpts = defaultPublishOpts
+    opts: PublishBlockOpts = {}
   ) => {
     const executionBuilder = chain.executionBuilder;
     if (!executionBuilder) throw Error("exeutionBuilder required to publish SignedBlindedBeaconBlock");
@@ -311,7 +310,7 @@ export function getBeaconBlockApi({
       await publishBlindedBlock(signedBlindedBlockOrContents, opts);
     },
 
-    async publishBlockV2(signedBlockOrContents, opts: PublishBlockOpts = defaultPublishOpts) {
+    async publishBlockV2(signedBlockOrContents, opts) {
       await publishBlock(signedBlockOrContents, opts);
     },
 
diff --git a/packages/validator/src/services/block.ts b/packages/validator/src/services/block.ts
index b149a507077b..454232af56f6 100644
--- a/packages/validator/src/services/block.ts
+++ b/packages/validator/src/services/block.ts
@@ -60,7 +60,7 @@ type ProduceBlockOpts = {
  */
 export class BlockProposingService {
   private readonly dutiesService: BlockDutiesService;
-  private readonly broadcastValidation: routes.beacon.BroadcastValidation;
+  private readonly broadcastValidation?: routes.beacon.BroadcastValidation;
 
   constructor(
     private readonly config: ChainForkConfig,
@@ -80,7 +80,7 @@ export class BlockProposingService {
       this.notifyBlockProductionFn
     );
 
-    this.broadcastValidation = broadcastValidation ?? routes.beacon.BroadcastValidation.none;
+    this.broadcastValidation = broadcastValidation;
   }
 
   removeDutiesForKey(pubkey: PubkeyHex): void {