diff --git a/node-forge/index.d.ts b/node-forge/index.d.ts
index 7e0cae19df..b39ede7ac4 100644
--- a/node-forge/index.d.ts
+++ b/node-forge/index.d.ts
@@ -34,4 +34,11 @@ declare module "node-forge" {
       export function generateKeyPair(options?: GenerateKeyPairOptions, callback?: (err: Error, keypair: KeyPair) => void): KeyPair;
     }
   }
+
+  export namespace ssh {
+    /**
+     * Encodes a private RSA key as an OpenSSH file.
+     */
+    export function privateKeyToOpenSSH(privateKey?: string, passphrase?: string): string;
+  }
 }
diff --git a/node-forge/node-forge-tests.ts b/node-forge/node-forge-tests.ts
index 16538ad84f..7ed36e50e2 100644
--- a/node-forge/node-forge-tests.ts
+++ b/node-forge/node-forge-tests.ts
@@ -3,3 +3,5 @@ import * as forge from "node-forge";
 let keypair = forge.pki.rsa.generateKeyPair({bits: 512});
 let privateKeyPem = forge.pki.privateKeyToPem(keypair.privateKey);
 let publicKeyPem = forge.pki.publicKeyToPem(keypair.publicKey);
+
+let x: string = forge.ssh.privateKeyToOpenSSH();