diff --git a/packages/technical-features/messaging/agnostic/src/features/actual/message/message-channel-listener-injection-token.ts b/packages/technical-features/messaging/agnostic/src/features/actual/message/message-channel-listener-injection-token.ts
index 386c9f9e5e..0558bf6598 100644
--- a/packages/technical-features/messaging/agnostic/src/features/actual/message/message-channel-listener-injection-token.ts
+++ b/packages/technical-features/messaging/agnostic/src/features/actual/message/message-channel-listener-injection-token.ts
@@ -9,7 +9,7 @@ export interface MessageChannel<Message> {
 export type ExtraData = { processId: number; frameId: number };
 
 export type MessageChannelHandler<Channel> = Channel extends MessageChannel<infer Message>
-  ? (message: Message, data: ExtraData) => void
+  ? (message: Message, data?: ExtraData) => void
   : never;
 
 export interface MessageChannelListener<Channel> {
diff --git a/packages/technical-features/messaging/electron/renderer/src/listening-of-messages/enlist-message-channel-listener.injectable.ts b/packages/technical-features/messaging/electron/renderer/src/listening-of-messages/enlist-message-channel-listener.injectable.ts
index 64e9b1f873..6948e51073 100644
--- a/packages/technical-features/messaging/electron/renderer/src/listening-of-messages/enlist-message-channel-listener.injectable.ts
+++ b/packages/technical-features/messaging/electron/renderer/src/listening-of-messages/enlist-message-channel-listener.injectable.ts
@@ -10,7 +10,7 @@ const enlistMessageChannelListenerInjectable = getInjectable({
     const ipcRenderer = di.inject(ipcRendererInjectable);
 
     return ({ channel, handler }) => {
-      const nativeCallback = (_: IpcRendererEvent, message: unknown) => {
+      const nativeCallback = (event: IpcRendererEvent, message: unknown) => {
         handler(message);
       };