diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c0755d73b..3b9b657e23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Examples (eth-pm): Use sign typed data EIP-712 instead of personal sign. 
 - Upgraded dependencies to remove warning at installation.
 - **Breaking**: Moved `DefaultPubSubTopic` to `waku.ts` and fixed the casing.
+- **Breaking**: Rename all `pubsubTopic` occurrences to `pubSubTopic`, across all interfaces.
 
 ### Removed
 - Examples (cli-chat): The focus of this library is Web environment;
diff --git a/proto/waku/v2/light_push.proto b/proto/waku/v2/light_push.proto
index 0200c9d2e9..6ec111db71 100644
--- a/proto/waku/v2/light_push.proto
+++ b/proto/waku/v2/light_push.proto
@@ -5,7 +5,7 @@ package waku.v2;
 import "waku/v2/message.proto";
 
 message PushRequest {
-  string pubsub_topic = 1;
+  string pub_sub_topic = 1;
   WakuMessage message = 2;
 }
 
diff --git a/proto/waku/v2/store.proto b/proto/waku/v2/store.proto
index 431a38b920..7796348034 100644
--- a/proto/waku/v2/store.proto
+++ b/proto/waku/v2/store.proto
@@ -25,7 +25,7 @@ message ContentFilter {
 }
 
 message HistoryQuery {
-  optional string pubsub_topic = 2;
+  optional string pub_sub_topic = 2;
   repeated ContentFilter content_filters = 3;
   optional PagingInfo paging_info = 4;
   optional double start_time = 5;
diff --git a/src/lib/waku.ts b/src/lib/waku.ts
index 9d66f2651d..9d7d3e9cd5 100644
--- a/src/lib/waku.ts
+++ b/src/lib/waku.ts
@@ -50,7 +50,7 @@ export interface CreateOptions {
    *
    * @default {@link DefaultPubSubTopic}
    */
-  pubsubTopic?: string;
+  pubSubTopic?: string;
   /**
    * Set keep alive frequency in seconds: Waku will send a `/ipfs/ping/1.0.0`
    * request to each peer after the set number of seconds. Set to 0 to disable.
@@ -158,9 +158,9 @@ export class Waku {
     );
 
     // Pass pubsub topic to relay
-    if (options?.pubsubTopic) {
+    if (options?.pubSubTopic) {
       libp2pOpts.config.pubsub = Object.assign(
-        { pubsubTopic: options.pubsubTopic },
+        { pubSubTopic: options.pubSubTopic },
         libp2pOpts.config.pubsub
       );
     }
@@ -222,7 +222,7 @@ export class Waku {
     const libp2p = await Libp2p.create(libp2pOpts);
 
     const wakuStore = new WakuStore(libp2p, {
-      pubsubTopic: options?.pubsubTopic,
+      pubSubTopic: options?.pubSubTopic,
     });
     const wakuLightPush = new WakuLightPush(libp2p);
 
diff --git a/src/lib/waku_light_push/index.spec.ts b/src/lib/waku_light_push/index.spec.ts
index fa7b7f110a..819b48bfb5 100644
--- a/src/lib/waku_light_push/index.spec.ts
+++ b/src/lib/waku_light_push/index.spec.ts
@@ -66,7 +66,7 @@ describe('Waku Light Push', () => {
     await nimWaku.start({ lightpush: true, topics: customPubSubTopic });
 
     waku = await Waku.create({
-      pubsubTopic: customPubSubTopic,
+      pubSubTopic: customPubSubTopic,
       staticNoiseKey: NOISE_KEY_1,
       libp2p: { modules: { transport: [TCP] } },
     });
diff --git a/src/lib/waku_light_push/index.ts b/src/lib/waku_light_push/index.ts
index 334483950f..e9fe73066f 100644
--- a/src/lib/waku_light_push/index.ts
+++ b/src/lib/waku_light_push/index.ts
@@ -66,10 +66,10 @@ export class WakuLightPush {
 
     const { stream } = await connection.newStream(LightPushCodec);
     try {
-      const pubsubTopic = opts?.pubSubTopic
+      const pubSubTopic = opts?.pubSubTopic
         ? opts.pubSubTopic
         : this.pubSubTopic;
-      const query = PushRPC.createRequest(message, pubsubTopic);
+      const query = PushRPC.createRequest(message, pubSubTopic);
       const res = await pipe(
         [query.encode()],
         lp.encode(),
diff --git a/src/lib/waku_light_push/push_rpc.ts b/src/lib/waku_light_push/push_rpc.ts
index 2f0c294bad..6f461b53ba 100644
--- a/src/lib/waku_light_push/push_rpc.ts
+++ b/src/lib/waku_light_push/push_rpc.ts
@@ -7,12 +7,12 @@ import { WakuMessage } from '../waku_message';
 export class PushRPC {
   public constructor(public proto: proto.PushRPC) {}
 
-  static createRequest(message: WakuMessage, pubsubTopic: string): PushRPC {
+  static createRequest(message: WakuMessage, pubSubTopic: string): PushRPC {
     return new PushRPC({
       requestId: uuid(),
       request: {
         message: message.proto,
-        pubsubTopic,
+        pubSubTopic: pubSubTopic,
       },
       response: undefined,
     });
diff --git a/src/lib/waku_relay/index.spec.ts b/src/lib/waku_relay/index.spec.ts
index 6dd4b4d608..b073310bc8 100644
--- a/src/lib/waku_relay/index.spec.ts
+++ b/src/lib/waku_relay/index.spec.ts
@@ -178,16 +178,16 @@ describe('Waku Relay', () => {
     it('Publish', async function () {
       this.timeout(10000);
 
-      const pubsubTopic = '/some/pubsub/topic';
+      const pubSubTopic = '/some/pubsub/topic';
 
       // 1 and 2 uses a custom pubsub
       const [waku1, waku2, waku3] = await Promise.all([
         Waku.create({
-          pubsubTopic,
+          pubSubTopic: pubSubTopic,
           staticNoiseKey: NOISE_KEY_1,
         }),
         Waku.create({
-          pubsubTopic,
+          pubSubTopic: pubSubTopic,
           staticNoiseKey: NOISE_KEY_2,
           libp2p: { addresses: { listen: ['/ip4/0.0.0.0/tcp/0/ws'] } },
         }),
diff --git a/src/lib/waku_relay/index.ts b/src/lib/waku_relay/index.ts
index d57d7633c1..5844e4f211 100644
--- a/src/lib/waku_relay/index.ts
+++ b/src/lib/waku_relay/index.ts
@@ -62,7 +62,7 @@ export interface GossipOptions {
  */
 export class WakuRelay extends Gossipsub {
   heartbeat: RelayHeartbeat;
-  pubsubTopic: string;
+  pubSubTopic: string;
 
   /**
    * Decryption private keys to use to attempt decryption of incoming messages.
@@ -97,7 +97,7 @@ export class WakuRelay extends Gossipsub {
 
     Object.assign(this, { multicodecs });
 
-    this.pubsubTopic = options?.pubsubTopic || DefaultPubSubTopic;
+    this.pubSubTopic = options?.pubSubTopic || DefaultPubSubTopic;
   }
 
   /**
@@ -109,7 +109,7 @@ export class WakuRelay extends Gossipsub {
    */
   public start(): void {
     super.start();
-    this.subscribe(this.pubsubTopic);
+    this.subscribe(this.pubSubTopic);
   }
 
   /**
@@ -120,7 +120,7 @@ export class WakuRelay extends Gossipsub {
    */
   public async send(message: WakuMessage): Promise<void> {
     const msg = message.encode();
-    await super.publish(this.pubsubTopic, Buffer.from(msg));
+    await super.publish(this.pubSubTopic, Buffer.from(msg));
   }
 
   /**
@@ -194,7 +194,7 @@ export class WakuRelay extends Gossipsub {
    * Return the relay peers we are connected to and we would publish a message to
    */
   getPeers(): Set<string> {
-    return getRelayPeers(this, this.pubsubTopic, this._options.D, (id) => {
+    return getRelayPeers(this, this.pubSubTopic, this._options.D, (id) => {
       // Filter peers we would not publish to
       return (
         this.score.score(id) >= this._options.scoreThresholds.publishThreshold
@@ -207,9 +207,9 @@ export class WakuRelay extends Gossipsub {
    *
    * @override
    */
-  subscribe(pubsubTopic: string): void {
-    this.on(pubsubTopic, (event) => {
-      dbg(`Message received on ${pubsubTopic}`);
+  subscribe(pubSubTopic: string): void {
+    this.on(pubSubTopic, (event) => {
+      dbg(`Message received on ${pubSubTopic}`);
       WakuMessage.decode(event.data, Array.from(this.decryptionKeys))
         .then((wakuMsg) => {
           if (!wakuMsg) {
@@ -235,7 +235,7 @@ export class WakuRelay extends Gossipsub {
         });
     });
 
-    super.subscribe(pubsubTopic);
+    super.subscribe(pubSubTopic);
   }
 
   /**
diff --git a/src/lib/waku_store/history_rpc.ts b/src/lib/waku_store/history_rpc.ts
index 681f915083..dd2ad185ae 100644
--- a/src/lib/waku_store/history_rpc.ts
+++ b/src/lib/waku_store/history_rpc.ts
@@ -11,7 +11,7 @@ export enum Direction {
 export interface Params {
   contentTopics: string[];
   cursor?: proto.Index;
-  pubsubTopic: string;
+  pubSubTopic: string;
   direction: Direction;
   pageSize: number;
 }
@@ -37,7 +37,7 @@ export class HistoryRPC {
     return new HistoryRPC({
       requestId: uuid(),
       query: {
-        pubsubTopic: params.pubsubTopic,
+        pubSubTopic: params.pubSubTopic,
         contentFilters,
         pagingInfo,
         startTime: undefined,
diff --git a/src/lib/waku_store/index.spec.ts b/src/lib/waku_store/index.spec.ts
index cf66002f32..a41bb84cc2 100644
--- a/src/lib/waku_store/index.spec.ts
+++ b/src/lib/waku_store/index.spec.ts
@@ -120,7 +120,7 @@ describe('Waku Store', () => {
     }
 
     waku = await Waku.create({
-      pubsubTopic: customPubSubTopic,
+      pubSubTopic: customPubSubTopic,
       staticNoiseKey: NOISE_KEY_1,
       libp2p: { modules: { transport: [TCP] } },
     });
diff --git a/src/lib/waku_store/index.ts b/src/lib/waku_store/index.ts
index 0bf2820d48..2ecbcecc5d 100644
--- a/src/lib/waku_store/index.ts
+++ b/src/lib/waku_store/index.ts
@@ -28,12 +28,12 @@ export interface CreateOptions {
    *
    * @default {@link DefaultPubSubTopic}
    */
-  pubsubTopic?: string;
+  pubSubTopic?: string;
 }
 
 export interface QueryOptions {
   peerId?: PeerId;
-  pubsubTopic?: string;
+  pubSubTopic?: string;
   direction?: Direction;
   pageSize?: number;
   callback?: (messages: WakuMessage[]) => void;
@@ -44,13 +44,13 @@ export interface QueryOptions {
  * Implements the [Waku v2 Store protocol](https://rfc.vac.dev/spec/13/).
  */
 export class WakuStore {
-  pubsubTopic: string;
+  pubSubTopic: string;
 
   constructor(public libp2p: Libp2p, options?: CreateOptions) {
-    if (options?.pubsubTopic) {
-      this.pubsubTopic = options.pubsubTopic;
+    if (options?.pubSubTopic) {
+      this.pubSubTopic = options.pubSubTopic;
     } else {
-      this.pubsubTopic = DefaultPubSubTopic;
+      this.pubSubTopic = DefaultPubSubTopic;
     }
   }
 
@@ -61,7 +61,7 @@ export class WakuStore {
    * retrieve all messages.
    * @param options
    * @param options.peerId The peer to query.Options
-   * @param options.pubsubTopic The pubsub topic to pass to the query. Defaults
+   * @param options.pubSubTopic The pubsub topic to pass to the query. Defaults
    * to the value set at creation. See [Waku v2 Topic Usage Recommendations](https://rfc.vac.dev/spec/23/).
    * @param options.callback Callback called on page of stored messages as they are retrieved
    * @param options.decryptionKeys Keys that will be used to decrypt messages.
@@ -75,7 +75,7 @@ export class WakuStore {
   ): Promise<WakuMessage[]> {
     const opts = Object.assign(
       {
-        pubsubTopic: this.pubsubTopic,
+        pubSubTopic: this.pubSubTopic,
         direction: Direction.BACKWARD,
         pageSize: 10,
       },
@@ -131,7 +131,7 @@ export class WakuStore {
       }
 
       dbg(
-        `${response.messages.length} messages retrieved for pubsub topic ${opts.pubsubTopic}`
+        `${response.messages.length} messages retrieved for pubsub topic ${opts.pubSubTopic}`
       );
 
       const pageMessages: WakuMessage[] = [];
diff --git a/src/proto/waku/v2/light_push.ts b/src/proto/waku/v2/light_push.ts
index 74dc68b013..bff84d2fca 100644
--- a/src/proto/waku/v2/light_push.ts
+++ b/src/proto/waku/v2/light_push.ts
@@ -6,7 +6,7 @@ import { WakuMessage } from '../../waku/v2/message';
 export const protobufPackage = 'waku.v2';
 
 export interface PushRequest {
-  pubsubTopic: string;
+  pubSubTopic: string;
   message: WakuMessage | undefined;
 }
 
@@ -21,15 +21,15 @@ export interface PushRPC {
   response: PushResponse | undefined;
 }
 
-const basePushRequest: object = { pubsubTopic: '' };
+const basePushRequest: object = { pubSubTopic: '' };
 
 export const PushRequest = {
   encode(
     message: PushRequest,
     writer: _m0.Writer = _m0.Writer.create()
   ): _m0.Writer {
-    if (message.pubsubTopic !== '') {
-      writer.uint32(10).string(message.pubsubTopic);
+    if (message.pubSubTopic !== '') {
+      writer.uint32(10).string(message.pubSubTopic);
     }
     if (message.message !== undefined) {
       WakuMessage.encode(message.message, writer.uint32(18).fork()).ldelim();
@@ -45,7 +45,7 @@ export const PushRequest = {
       const tag = reader.uint32();
       switch (tag >>> 3) {
         case 1:
-          message.pubsubTopic = reader.string();
+          message.pubSubTopic = reader.string();
           break;
         case 2:
           message.message = WakuMessage.decode(reader, reader.uint32());
@@ -60,10 +60,10 @@ export const PushRequest = {
 
   fromJSON(object: any): PushRequest {
     const message = { ...basePushRequest } as PushRequest;
-    if (object.pubsubTopic !== undefined && object.pubsubTopic !== null) {
-      message.pubsubTopic = String(object.pubsubTopic);
+    if (object.pubSubTopic !== undefined && object.pubSubTopic !== null) {
+      message.pubSubTopic = String(object.pubSubTopic);
     } else {
-      message.pubsubTopic = '';
+      message.pubSubTopic = '';
     }
     if (object.message !== undefined && object.message !== null) {
       message.message = WakuMessage.fromJSON(object.message);
@@ -75,8 +75,8 @@ export const PushRequest = {
 
   toJSON(message: PushRequest): unknown {
     const obj: any = {};
-    message.pubsubTopic !== undefined &&
-      (obj.pubsubTopic = message.pubsubTopic);
+    message.pubSubTopic !== undefined &&
+      (obj.pubSubTopic = message.pubSubTopic);
     message.message !== undefined &&
       (obj.message = message.message
         ? WakuMessage.toJSON(message.message)
@@ -86,10 +86,10 @@ export const PushRequest = {
 
   fromPartial(object: DeepPartial<PushRequest>): PushRequest {
     const message = { ...basePushRequest } as PushRequest;
-    if (object.pubsubTopic !== undefined && object.pubsubTopic !== null) {
-      message.pubsubTopic = object.pubsubTopic;
+    if (object.pubSubTopic !== undefined && object.pubSubTopic !== null) {
+      message.pubSubTopic = object.pubSubTopic;
     } else {
-      message.pubsubTopic = '';
+      message.pubSubTopic = '';
     }
     if (object.message !== undefined && object.message !== null) {
       message.message = WakuMessage.fromPartial(object.message);
diff --git a/src/proto/waku/v2/store.ts b/src/proto/waku/v2/store.ts
index 5be71d8d29..19bb9180a9 100644
--- a/src/proto/waku/v2/store.ts
+++ b/src/proto/waku/v2/store.ts
@@ -58,7 +58,7 @@ export interface ContentFilter {
 }
 
 export interface HistoryQuery {
-  pubsubTopic?: string | undefined;
+  pubSubTopic?: string | undefined;
   contentFilters: ContentFilter[];
   pagingInfo?: PagingInfo | undefined;
   startTime?: number | undefined;
@@ -366,8 +366,8 @@ export const HistoryQuery = {
     message: HistoryQuery,
     writer: _m0.Writer = _m0.Writer.create()
   ): _m0.Writer {
-    if (message.pubsubTopic !== undefined) {
-      writer.uint32(18).string(message.pubsubTopic);
+    if (message.pubSubTopic !== undefined) {
+      writer.uint32(18).string(message.pubSubTopic);
     }
     for (const v of message.contentFilters) {
       ContentFilter.encode(v!, writer.uint32(26).fork()).ldelim();
@@ -393,7 +393,7 @@ export const HistoryQuery = {
       const tag = reader.uint32();
       switch (tag >>> 3) {
         case 2:
-          message.pubsubTopic = reader.string();
+          message.pubSubTopic = reader.string();
           break;
         case 3:
           message.contentFilters.push(
@@ -420,10 +420,10 @@ export const HistoryQuery = {
   fromJSON(object: any): HistoryQuery {
     const message = { ...baseHistoryQuery } as HistoryQuery;
     message.contentFilters = [];
-    if (object.pubsubTopic !== undefined && object.pubsubTopic !== null) {
-      message.pubsubTopic = String(object.pubsubTopic);
+    if (object.pubSubTopic !== undefined && object.pubSubTopic !== null) {
+      message.pubSubTopic = String(object.pubSubTopic);
     } else {
-      message.pubsubTopic = undefined;
+      message.pubSubTopic = undefined;
     }
     if (object.contentFilters !== undefined && object.contentFilters !== null) {
       for (const e of object.contentFilters) {
@@ -450,8 +450,8 @@ export const HistoryQuery = {
 
   toJSON(message: HistoryQuery): unknown {
     const obj: any = {};
-    message.pubsubTopic !== undefined &&
-      (obj.pubsubTopic = message.pubsubTopic);
+    message.pubSubTopic !== undefined &&
+      (obj.pubSubTopic = message.pubSubTopic);
     if (message.contentFilters) {
       obj.contentFilters = message.contentFilters.map((e) =>
         e ? ContentFilter.toJSON(e) : undefined
@@ -471,10 +471,10 @@ export const HistoryQuery = {
   fromPartial(object: DeepPartial<HistoryQuery>): HistoryQuery {
     const message = { ...baseHistoryQuery } as HistoryQuery;
     message.contentFilters = [];
-    if (object.pubsubTopic !== undefined && object.pubsubTopic !== null) {
-      message.pubsubTopic = object.pubsubTopic;
+    if (object.pubSubTopic !== undefined && object.pubSubTopic !== null) {
+      message.pubSubTopic = object.pubSubTopic;
     } else {
-      message.pubsubTopic = undefined;
+      message.pubSubTopic = undefined;
     }
     if (object.contentFilters !== undefined && object.contentFilters !== null) {
       for (const e of object.contentFilters) {
diff --git a/src/test_utils/nim_waku.ts b/src/test_utils/nim_waku.ts
index 8f93b6908c..d2ce6cd424 100644
--- a/src/test_utils/nim_waku.ts
+++ b/src/test_utils/nim_waku.ts
@@ -171,7 +171,7 @@ export class NimWaku {
 
   async sendMessage(
     message: WakuMessage,
-    pubsubTopic?: string
+    pubSubTopic?: string
   ): Promise<boolean> {
     this.checkProcess();
 
@@ -195,7 +195,7 @@ export class NimWaku {
     };
 
     return this.rpcCall<boolean>('post_waku_v2_relay_v1_message', [
-      pubsubTopic ? pubsubTopic : DefaultPubSubTopic,
+      pubSubTopic ? pubSubTopic : DefaultPubSubTopic,
       rpcMessage,
     ]);
   }
@@ -233,7 +233,7 @@ export class NimWaku {
   async postAsymmetricMessage(
     message: WakuRelayMessage,
     publicKey: Uint8Array,
-    pubsubTopic?: string
+    pubSubTopic?: string
   ): Promise<boolean> {
     this.checkProcess();
 
@@ -242,7 +242,7 @@ export class NimWaku {
     }
 
     return this.rpcCall<boolean>('post_waku_v2_private_v1_asymmetric_message', [
-      pubsubTopic ? pubsubTopic : DefaultPubSubTopic,
+      pubSubTopic ? pubSubTopic : DefaultPubSubTopic,
       message,
       '0x' + bufToHex(publicKey),
     ]);
@@ -250,14 +250,14 @@ export class NimWaku {
 
   async getAsymmetricMessages(
     privateKey: Uint8Array,
-    pubsubTopic?: string
+    pubSubTopic?: string
   ): Promise<WakuRelayMessage[]> {
     this.checkProcess();
 
     return await this.rpcCall<WakuRelayMessage[]>(
       'get_waku_v2_private_v1_asymmetric_messages',
       [
-        pubsubTopic ? pubsubTopic : DefaultPubSubTopic,
+        pubSubTopic ? pubSubTopic : DefaultPubSubTopic,
         '0x' + bufToHex(privateKey),
       ]
     );
@@ -275,7 +275,7 @@ export class NimWaku {
   async postSymmetricMessage(
     message: WakuRelayMessage,
     symKey: Uint8Array,
-    pubsubTopic?: string
+    pubSubTopic?: string
   ): Promise<boolean> {
     this.checkProcess();
 
@@ -284,7 +284,7 @@ export class NimWaku {
     }
 
     return this.rpcCall<boolean>('post_waku_v2_private_v1_symmetric_message', [
-      pubsubTopic ? pubsubTopic : DefaultPubSubTopic,
+      pubSubTopic ? pubSubTopic : DefaultPubSubTopic,
       message,
       '0x' + bufToHex(symKey),
     ]);
@@ -292,13 +292,13 @@ export class NimWaku {
 
   async getSymmetricMessages(
     symKey: Uint8Array,
-    pubsubTopic?: string
+    pubSubTopic?: string
   ): Promise<WakuRelayMessage[]> {
     this.checkProcess();
 
     return await this.rpcCall<WakuRelayMessage[]>(
       'get_waku_v2_private_v1_symmetric_messages',
-      [pubsubTopic ? pubsubTopic : DefaultPubSubTopic, '0x' + bufToHex(symKey)]
+      [pubSubTopic ? pubSubTopic : DefaultPubSubTopic, '0x' + bufToHex(symKey)]
     );
   }