diff --git a/node/node.d.ts b/node/node.d.ts
index 1cab19a6d2..e1a1420883 100644
--- a/node/node.d.ts
+++ b/node/node.d.ts
@@ -758,7 +758,7 @@ declare module "punycode" {
     export function toASCII(domain: string): string;
     export var ucs2: ucs2;
     interface ucs2 {
-        decode(string: string): string;
+        decode(string: string): number[];
         encode(codePoints: number[]): string;
     }
     export var version: any;