diff --git a/src/client.ts b/src/client.ts
index 894c5a09d..1598ef34b 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -2027,7 +2027,7 @@ export class MatrixClient extends EventEmitter {
      *     recovery key which should be disposed of after displaying to the user,
      *     and raw private key to avoid round tripping if needed.
      */
-    public createRecoveryKeyFromPassphrase(password: string): Promise<IRecoveryKey> {
+    public createRecoveryKeyFromPassphrase(password?: string): Promise<IRecoveryKey> {
         if (!this.crypto) {
             throw new Error("End-to-end encryption disabled");
         }
@@ -7451,7 +7451,7 @@ export class MatrixClient extends EventEmitter {
         return this.http.authedRequest(undefined, "GET", path, qps, undefined);
     }
 
-    public uploadDeviceSigningKeys(auth: any, keys: CrossSigningKeys): Promise<{}> { // TODO: types
+    public uploadDeviceSigningKeys(auth: any, keys?: CrossSigningKeys): Promise<{}> { // TODO: types
         const data = Object.assign({}, keys);
         if (auth) Object.assign(data, { auth });
         return this.http.authedRequest(
diff --git a/src/crypto/api.ts b/src/crypto/api.ts
index 57f48c18c..1bd65d7db 100644
--- a/src/crypto/api.ts
+++ b/src/crypto/api.ts
@@ -58,7 +58,7 @@ export interface IEncryptedEventInfo {
 }
 
 export interface IRecoveryKey {
-    keyInfo: {
+    keyInfo?: {
         pubkey: string;
         passphrase?: {
             algorithm: string;
@@ -67,7 +67,7 @@ export interface IRecoveryKey {
         };
     };
     privateKey: Uint8Array;
-    encodedPrivateKey: string;
+    encodedPrivateKey?: string;
 }
 
 export interface ICreateSecretStorageOpts {
diff --git a/src/crypto/index.ts b/src/crypto/index.ts
index 4022ce400..e35eef493 100644
--- a/src/crypto/index.ts
+++ b/src/crypto/index.ts
@@ -506,7 +506,7 @@ export class Crypto extends EventEmitter {
      *     recovery key which should be disposed of after displaying to the user,
      *     and raw private key to avoid round tripping if needed.
      */
-    public async createRecoveryKeyFromPassphrase(password: string): Promise<IRecoveryKey> {
+    public async createRecoveryKeyFromPassphrase(password?: string): Promise<IRecoveryKey> {
         const decryption = new global.Olm.PkDecryption();
         try {
             const keyInfo: Partial<IRecoveryKey["keyInfo"]> = {};