diff --git a/types/event-emitter/pipe.d.ts b/types/event-emitter/pipe.d.ts
index 2a33b8361d..269df5fe48 100644
--- a/types/event-emitter/pipe.d.ts
+++ b/types/event-emitter/pipe.d.ts
@@ -6,5 +6,5 @@ declare namespace pipe {
     }
 }
 
-declare function pipe(source: Emitter, target: Emitter, emitMethodName?: string): pipe.EmitterPipe;
+declare function pipe(source: Emitter, target: Emitter, emitMethodName?: string | Symbol): pipe.EmitterPipe;
 export = pipe;