diff --git a/docs/api/index.md b/docs/api/index.md
index 26ee2981..cf3370d7 100644
--- a/docs/api/index.md
+++ b/docs/api/index.md
@@ -72,7 +72,6 @@ sidebar_label: API
 | [BrowserConnectOptions](./puppeteer.browserconnectoptions.md)               | Generic browser options that can be passed when launching any browser or when connecting to an existing browser instance.                                                                           |
 | [BrowserContextOptions](./puppeteer.browsercontextoptions.md)               | BrowserContext options.                                                                                                                                                                             |
 | [BrowserLaunchArgumentOptions](./puppeteer.browserlaunchargumentoptions.md) | Launcher options that only apply to Chrome.                                                                                                                                                         |
-| [CDPSessionOnMessageObject](./puppeteer.cdpsessiononmessageobject.md)       |                                                                                                                                                                                                     |
 | [ClickOptions](./puppeteer.clickoptions.md)                                 |                                                                                                                                                                                                     |
 | [CommonEventEmitter](./puppeteer.commoneventemitter.md)                     |                                                                                                                                                                                                     |
 | [Configuration](./puppeteer.configuration.md)                               | <p>Defines options to configure Puppeteer's behavior during installation and runtime.</p><p>See individual properties for more information.</p>                                                     |
diff --git a/docs/api/puppeteer.cdpsessiononmessageobject.md b/docs/api/puppeteer.cdpsessiononmessageobject.md
deleted file mode 100644
index da62304c..00000000
--- a/docs/api/puppeteer.cdpsessiononmessageobject.md
+++ /dev/null
@@ -1,21 +0,0 @@
----
-sidebar_label: CDPSessionOnMessageObject
----
-
-# CDPSessionOnMessageObject interface
-
-#### Signature:
-
-```typescript
-export interface CDPSessionOnMessageObject
-```
-
-## Properties
-
-| Property | Modifiers             | Type                                          | Description | Default |
-| -------- | --------------------- | --------------------------------------------- | ----------- | ------- |
-| error    |                       | { message: string; data: any; code: number; } |             |         |
-| id       | <code>optional</code> | number                                        |             |         |
-| method   |                       | string                                        |             |         |
-| params   |                       | Record&lt;string, unknown&gt;                 |             |         |
-| result   | <code>optional</code> | any                                           |             |         |
diff --git a/packages/puppeteer-core/src/common/Connection.ts b/packages/puppeteer-core/src/common/Connection.ts
index def84d0f..f9ea618c 100644
--- a/packages/puppeteer-core/src/common/Connection.ts
+++ b/packages/puppeteer-core/src/common/Connection.ts
@@ -411,7 +411,7 @@ export class Connection extends EventEmitter {
 }
 
 /**
- * @public
+ * @internal
  */
 export interface CDPSessionOnMessageObject {
   id?: number;