diff --git a/types/node/index.d.ts b/types/node/index.d.ts
index 2ef587520c..dfbc5784e8 100644
--- a/types/node/index.d.ts
+++ b/types/node/index.d.ts
@@ -270,6 +270,7 @@ declare var SlowBuffer: {
 // Buffer class
 type BufferEncoding = "ascii" | "utf8" | "utf16le" | "ucs2" | "base64" | "latin1" | "binary" | "hex";
 interface Buffer extends Uint8Array {
+    constructor: typeof Buffer;
     write(string: string, offset?: number, length?: number, encoding?: string): number;
     toString(encoding?: string, start?: number, end?: number): string;
     toJSON(): { type: 'Buffer', data: any[] };
diff --git a/types/node/v9/index.d.ts b/types/node/v9/index.d.ts
index e1b44f5602..0c77d826b9 100644
--- a/types/node/v9/index.d.ts
+++ b/types/node/v9/index.d.ts
@@ -260,6 +260,7 @@ declare var SlowBuffer: {
 // Buffer class
 type BufferEncoding = "ascii" | "utf8" | "utf16le" | "ucs2" | "base64" | "latin1" | "binary" | "hex";
 interface Buffer extends Uint8Array {
+    constructor: typeof Buffer;
     write(string: string, offset?: number, length?: number, encoding?: string): number;
     toString(encoding?: string, start?: number, end?: number): string;
     toJSON(): { type: 'Buffer', data: any[] };