diff --git a/types/uws/index.d.ts b/types/uws/index.d.ts
index 6072c41534..20a024c1b8 100644
--- a/types/uws/index.d.ts
+++ b/types/uws/index.d.ts
@@ -1,6 +1,7 @@
 // Type definitions for uWS 0.13
 // Project: https://github.com/uWebSockets/uWebSockets
 // Definitions by: York Yao <https://github.com/plantain-00>
+//                 Orblazer <https://github.com/orblazer>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
@@ -59,13 +60,13 @@ declare class WebSocket extends events.EventEmitter {
     addEventListener(method: string, listener?: (...args: any[]) => void): void;
 
     // Events
-    on(event: 'error', cb: (err: Error) => void): this;
-    on(event: 'close', cb: (code: number, message: string) => void): this;
-    on(event: 'message', cb: (data: any, flags: { binary: boolean }) => void): this;
-    on(event: 'ping', cb: (data: any, flags: { binary: boolean }) => void): this;
-    on(event: 'pong', cb: (data: any, flags: { binary: boolean }) => void): this;
-    on(event: 'open', cb: () => void): this;
-    on(event: string, listener: (...args: any[]) => void): this;
+    on(event: 'error', cb: (this: this, err: Error) => void): this;
+    on(event: 'close', cb: (this: this, code: number, message: string) => void): this;
+    on(event: 'message', cb: (this: this, data: any, flags: { binary: boolean }) => void): this;
+    on(event: 'ping', cb: (this: this, data: any, flags: { binary: boolean }) => void): this;
+    on(event: 'pong', cb: (this: this, data: any, flags: { binary: boolean }) => void): this;
+    on(event: 'open', cb: (this: this) => void): this;
+    on(event: string, listener: (this: this, ...args: any[]) => void): this;
 
     addListener(event: 'error', cb: (err: Error) => void): this;
     addListener(event: 'close', cb: (code: number, message: string) => void): this;
@@ -141,7 +142,7 @@ declare namespace WebSocket {
         // Events
         on(event: 'error', cb: (err: Error) => void): this;
         on(event: 'headers', cb: (headers: string[]) => void): this;
-        on(event: 'connection', cb: (client: WebSocket) => void): this;
+        on(event: 'connection', cb: (this: WebSocket, client: WebSocket) => void): this;
         on(event: string, listener: (...args: any[]) => void): this;
 
         addListener(event: 'error', cb: (err: Error) => void): this;