diff --git a/socket.io/socket.io.d.ts b/socket.io/socket.io.d.ts
index 677d4fcc2c..258b573d56 100644
--- a/socket.io/socket.io.d.ts
+++ b/socket.io/socket.io.d.ts
@@ -55,7 +55,7 @@ declare module SocketIO {
     interface Socket {
         rooms: string[];
         client: Client;
-        conn: Socket;
+        conn: any;
         request: any;
         id: string;
         emit(name: string, ...args: any[]): Socket;