diff --git a/api/src/channel/lib/EventWrapper.ts b/api/src/channel/lib/EventWrapper.ts
index 722be1e7..64a8efc5 100644
--- a/api/src/channel/lib/EventWrapper.ts
+++ b/api/src/channel/lib/EventWrapper.ts
@@ -20,7 +20,9 @@ import {
 import { Payload } from '@/chat/schemas/types/quick-reply';
 import { NLU } from '@/helper/types';
 
-import ChannelHandler, { ChannelNameOf } from './Handler';
+import { ChannelName } from '../types';
+
+import ChannelHandler from './Handler';
 
 export interface ChannelEvent {}
 
@@ -28,13 +30,15 @@ export interface ChannelEvent {}
 export default abstract class EventWrapper<
   A,
   E,
-  C extends ChannelHandler = ChannelHandler,
+  N extends ChannelName = ChannelName,
+  C extends ChannelHandler = ChannelHandler<N>,
+  S = SubscriberChannelDict[N],
 > {
   _adapter: A = {} as A;
 
   _handler: C;
 
-  channelAttrs: SubscriberChannelDict[ChannelNameOf<C>];
+  channelAttrs: S;
 
   _profile!: Subscriber;
 
@@ -50,11 +54,7 @@ export default abstract class EventWrapper<
    * @param event - The message event received
    * @param channelAttrs - Channel's specific data
    */
-  constructor(
-    handler: C,
-    event: E,
-    channelAttrs: SubscriberChannelDict[ChannelNameOf<C>] = {},
-  ) {
+  constructor(handler: C, event: E, channelAttrs: S = {} as S) {
     this._handler = handler;
     this._init(event);
     this.channelAttrs = channelAttrs;
@@ -106,11 +106,11 @@ export default abstract class EventWrapper<
    *
    * @returns Returns any channel related data.
    */
-  getChannelData(): SubscriberChannelData<ChannelNameOf<C>> {
+  getChannelData(): SubscriberChannelData<N> {
     return {
       name: this._handler.getName(),
       ...this.channelAttrs,
-    } as SubscriberChannelData<ChannelNameOf<C>>;
+    } as SubscriberChannelData<N>;
   }
 
   /**
@@ -267,7 +267,8 @@ type GenericEventAdapter = {
 
 export class GenericEventWrapper extends EventWrapper<
   GenericEventAdapter,
-  GenericEvent
+  GenericEvent,
+  ChannelName
 > {
   /**
    * Constructor : channel's event wrapper
diff --git a/api/src/channel/lib/Handler.ts b/api/src/channel/lib/Handler.ts
index c23e58d9..fb277fdf 100644
--- a/api/src/channel/lib/Handler.ts
+++ b/api/src/channel/lib/Handler.ts
@@ -28,8 +28,6 @@ import { ChannelName, ChannelSetting } from '../types';
 
 import EventWrapper from './EventWrapper';
 
-export type ChannelNameOf<C> = C extends ChannelHandler<infer N> ? N : never;
-
 @Injectable()
 export default abstract class ChannelHandler<
     N extends ChannelName = ChannelName,
@@ -176,7 +174,7 @@ export default abstract class ChannelHandler<
    
    */
   abstract sendMessage(
-    event: EventWrapper<any, any>,
+    event: EventWrapper<any, any, N>,
     envelope: StdOutgoingEnvelope,
     options: any,
     context: any,
@@ -189,7 +187,7 @@ export default abstract class ChannelHandler<
    
    */
   abstract getUserData(
-    event: EventWrapper<any, any>,
+    event: EventWrapper<any, any, N>,
   ): Promise<SubscriberCreateDto>;
 
   /**
diff --git a/api/src/chat/schemas/types/channel.ts b/api/src/chat/schemas/types/channel.ts
index 4cab1fef..d53a3c60 100644
--- a/api/src/chat/schemas/types/channel.ts
+++ b/api/src/chat/schemas/types/channel.ts
@@ -10,12 +10,12 @@ import { ChannelName } from '@/channel/types';
 
 export type SubscriberChannelData<
   C extends ChannelName = null,
-  K extends keyof SubscriberChannelDict[C] = keyof SubscriberChannelDict[C],
+  // K extends keyof SubscriberChannelDict[C] = keyof SubscriberChannelDict[C],
 > = C extends null
   ? { name: ChannelName }
   : {
       name: C;
     } & {
       // Channel's specific attributes
-      [P in keyof SubscriberChannelDict[C]]: SubscriberChannelDict[C][K];
+      [P in keyof SubscriberChannelDict[C]]: SubscriberChannelDict[C][P];
     };
diff --git a/api/src/chat/services/bot.service.spec.ts b/api/src/chat/services/bot.service.spec.ts
index b9615a0f..5dab34e6 100644
--- a/api/src/chat/services/bot.service.spec.ts
+++ b/api/src/chat/services/bot.service.spec.ts
@@ -26,6 +26,7 @@ import { ContentService } from '@/cms/services/content.service';
 import { MenuService } from '@/cms/services/menu.service';
 import { webEventText } from '@/extensions/channels/web/__test__/events.mock';
 import WebChannelHandler from '@/extensions/channels/web/index.channel';
+import { WEB_CHANNEL_NAME } from '@/extensions/channels/web/settings';
 import WebEventWrapper from '@/extensions/channels/web/wrapper';
 import { HelperService } from '@/helper/helper.service';
 import { LanguageRepository } from '@/i18n/repositories/language.repository';
@@ -201,7 +202,7 @@ describe('BlockService', () => {
       .spyOn(botService, 'findBlockAndSendReply')
       .mockImplementation(
         (
-          actualEvent: WebEventWrapper,
+          actualEvent: WebEventWrapper<typeof WEB_CHANNEL_NAME>,
           actualConversation: Conversation,
           actualBlock: BlockFull,
           isFallback: boolean,
@@ -267,7 +268,7 @@ describe('BlockService', () => {
       .mockImplementation(
         async (
           actualConversation: ConversationFull,
-          event: WebEventWrapper,
+          event: WebEventWrapper<typeof WEB_CHANNEL_NAME>,
         ) => {
           expect(actualConversation).toEqualPayload({
             next: [],
diff --git a/api/src/extensions/channels/hexabot-channel-messenger b/api/src/extensions/channels/hexabot-channel-messenger
deleted file mode 160000
index cf7004ef..00000000
--- a/api/src/extensions/channels/hexabot-channel-messenger
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit cf7004ef6adac1b5e033d06987f493a9b00e01d2
diff --git a/api/src/extensions/channels/web/base-web-channel.ts b/api/src/extensions/channels/web/base-web-channel.ts
index eb428c20..b63a34f6 100644
--- a/api/src/extensions/channels/web/base-web-channel.ts
+++ b/api/src/extensions/channels/web/base-web-channel.ts
@@ -20,7 +20,6 @@ import { v4 as uuidv4 } from 'uuid';
 import { Attachment } from '@/attachment/schemas/attachment.schema';
 import { AttachmentService } from '@/attachment/services/attachment.service';
 import { ChannelService } from '@/channel/channel.service';
-import EventWrapper from '@/channel/lib/EventWrapper';
 import ChannelHandler from '@/channel/lib/Handler';
 import { ChannelName } from '@/channel/types';
 import { MessageCreateDto } from '@/chat/dto/message.dto';
@@ -782,11 +781,7 @@ export default abstract class BaseWebChannelHandler<
             data.data = upload;
           }
           const channelAttrs = this.getChannelAttributes(req);
-          const event: WebEventWrapper = new WebEventWrapper(
-            this,
-            data,
-            channelAttrs,
-          );
+          const event = new WebEventWrapper<N>(this, data, channelAttrs);
           if (event.getEventType() === 'message') {
             // Handler sync message sent by chabbot
             if (data.sync && data.author === 'chatbot') {
@@ -1206,7 +1201,7 @@ export default abstract class BaseWebChannelHandler<
    * @returns The web's response, otherwise an error
    */
   async sendMessage(
-    event: EventWrapper<any, any>,
+    event: WebEventWrapper<N>,
     envelope: StdOutgoingEnvelope,
     options: BlockOptions,
     _context?: any,
@@ -1280,7 +1275,7 @@ export default abstract class BaseWebChannelHandler<
    *
    * @returns The web's response, otherwise an error
    */
-  async getUserData(event: WebEventWrapper): Promise<SubscriberCreateDto> {
+  async getUserData(event: WebEventWrapper<N>): Promise<SubscriberCreateDto> {
     const sender = event.getSender();
     const {
       id: _id,
diff --git a/api/src/extensions/channels/web/wrapper.ts b/api/src/extensions/channels/web/wrapper.ts
index b1650be7..b8c7cc7a 100644
--- a/api/src/extensions/channels/web/wrapper.ts
+++ b/api/src/extensions/channels/web/wrapper.ts
@@ -68,10 +68,12 @@ type WebEventAdapter =
       raw: Web.IncomingMessage<Web.IncomingAttachmentMessage>;
     };
 
-export default class WebEventWrapper<
-  T extends
-    BaseWebChannelHandler<ChannelName> = BaseWebChannelHandler<ChannelName>,
-> extends EventWrapper<WebEventAdapter, Web.Event> {
+// eslint-disable-next-line prettier/prettier
+export default class WebEventWrapper<N extends ChannelName> extends EventWrapper<
+  WebEventAdapter,
+  Web.Event,
+  N
+> {
   /**
    * Constructor : channel's event wrapper
    *
@@ -80,7 +82,7 @@ export default class WebEventWrapper<
    * @param channelAttrs - Channel's specific extra attributes {isSocket, ipAddress}
    */
   constructor(
-    handler: T,
+    handler: BaseWebChannelHandler<N>,
     event: Web.Event,
     channelAttrs: SubscriberChannelDict[typeof WEB_CHANNEL_NAME],
   ) {