diff --git a/src/service/translate.js b/src/service/translate.js
index <HASH>..<HASH> 100644
--- a/src/service/translate.js
+++ b/src/service/translate.js
@@ -228,7 +228,7 @@ function $translate($STORAGE_KEY, $windowProvider, $translateSanitizationProvide
    * registered with no language key. Invoking it with a language key returns the
    * related translation table.
    *
-   * @param {string} key A language key.
+   * @param {string} langKey A language key.
    * @param {object} translationTable A plain old JavaScript object that represents a translation table.
    *
    */
docs(service): fix typo in param name