diff --git a/src/crypto/algorithms/megolm.js b/src/crypto/algorithms/megolm.js
index a7c3d7175..f3e276117 100644
--- a/src/crypto/algorithms/megolm.js
+++ b/src/crypto/algorithms/megolm.js
@@ -1551,7 +1551,7 @@ MegolmDecryption.prototype._buildKeyForwardingMessage = async function(
  * @param {module:crypto/OlmDevice.MegolmSessionData} session
  * @param {object} [opts={}] options for the import
  * @param {boolean} [opts.untrusted] whether the key should be considered as untrusted
- * @param {string} [opts.source where] the key came from
+ * @param {string} [opts.source] where the key came from
  */
 MegolmDecryption.prototype.importRoomKey = function(session, opts = {}) {
     return this._olmDevice.addInboundGroupSession(