diff --git a/types/node/index.d.ts b/types/node/index.d.ts
index 5d6b9e9d79..69018ec5f0 100644
--- a/types/node/index.d.ts
+++ b/types/node/index.d.ts
@@ -5836,8 +5836,8 @@ declare module "crypto" {
     export function getCiphers(): string[];
     export function getCurves(): string[];
     export function getHashes(): string[];
-    export interface ECDH {
-        convertKey(key: string | Buffer /*| TypedArray*/ | DataView, curve: string, inputEncoding?: string, outputEncoding?: string, format?: string): Buffer | string;
+    export class ECDH {
+        static convertKey(key: string | Buffer /*| TypedArray*/ | DataView, curve: string, inputEncoding?: "latin1" | "hex" | "base64", outputEncoding?: "latin1" | "hex" | "base64", format?: "uncompressed" | "compressed" | "hybrid"): Buffer | string;
         generateKeys(): Buffer;
         generateKeys(encoding: HexBase64Latin1Encoding, format?: ECDHKeyFormat): string;
         computeSecret(other_public_key: Buffer): Buffer;
diff --git a/types/node/node-tests.ts b/types/node/node-tests.ts
index c8f61b948a..a4850ff4ef 100644
--- a/types/node/node-tests.ts
+++ b/types/node/node-tests.ts
@@ -1151,6 +1151,19 @@ namespace crypto_tests {
         crypto.randomFill(arr, 2, (err: Error, buf: Uint8Array) => void {});
         crypto.randomFill(arr, 2, 3, (err: Error, buf: Uint8Array) => void {});
     }
+
+    {
+        let key: string | Buffer = Buffer.from("buf");
+        let curve = "secp256k1";
+        let ret: string | Buffer = crypto.ECDH.convertKey(key, curve);
+        key = "0xfff";
+        ret = crypto.ECDH.convertKey(key, curve);
+        ret = crypto.ECDH.convertKey(key, curve, "hex");
+        ret = crypto.ECDH.convertKey(key, curve, "hex", "hex");
+        ret = crypto.ECDH.convertKey(key, curve, "hex", "hex", "uncompressed");
+        ret = crypto.ECDH.convertKey(key, curve, "hex", "hex", "compressed");
+        ret = crypto.ECDH.convertKey(key, curve, "hex", "hex", "hybrid");
+    }
 }
 
 //////////////////////////////////////////////////