diff --git a/src/crypto/store/indexeddb-crypto-store.js b/src/crypto/store/indexeddb-crypto-store.js
index <HASH>..<HASH> 100644
--- a/src/crypto/store/indexeddb-crypto-store.js
+++ b/src/crypto/store/indexeddb-crypto-store.js
@@ -312,6 +312,7 @@ export class IndexedDBCryptoStore {
      * @param {*} txn An active transaction. See doTxn().
      * @param {function(string)} func Called with the private key
      * @param {string} type A key type
+     * @returns {Promise} a promise
      */
     async getCrossSigningPrivateKey(txn, func, type) {
         return this._backend.getCrossSigningPrivateKey(txn, func, type);
@@ -333,6 +334,7 @@ export class IndexedDBCryptoStore {
      * @param {*} txn An active transaction. See doTxn().
      * @param {string} type The type of cross-signing private key to store
      * @param {string} key keys object as getCrossSigningKeys()
+     * @returns {Promise} a promise
      */
     storeCrossSigningPrivateKey(txn, type, key) {
         return this._backend.storeCrossSigningPrivateKey(txn, type, key);
there's some days that the linter and i, we just really don't see eye-to-eye