diff --git a/lib/persisted-model.js b/lib/persisted-model.js
index c33e7583..4605caa2 100644
--- a/lib/persisted-model.js
+++ b/lib/persisted-model.js
@@ -450,7 +450,7 @@ module.exports = function(registry) {
    * Update set of attributes.  Performs validation before updating.
    *
    * Triggers: `validation`, `save` and `update` hooks
-   * @param {Object} data Dta to update.
+   * @param {Object} data Data to update.
    * @callback {Function} callback Callback function called with `(err, instance)` arguments.  Required.
    * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
    * @param {Object} instance Updated instance.