diff --git a/src/ngMessages/messages.js b/src/ngMessages/messages.js
index f15b1099a505..6ce5b0625564 100644
--- a/src/ngMessages/messages.js
+++ b/src/ngMessages/messages.js
@@ -629,10 +629,8 @@ angular.module('ngMessages', [], function initAngularHelpers() {
    * @scope
    *
    * @description
-   * `ngMessageExp` is a directive with the purpose to show and hide a particular message.
-   * For `ngMessageExp` to operate, a parent `ngMessages` directive on a parent DOM element
-   * must be situated since it determines which messages are visible based on the state
-   * of the provided key/value map that `ngMessages` listens on.
+   * `ngMessageExp` is the same as {@link directive:ngMessage `ngMessage`} but instead
+   * of a static value, accepts an expression to be evaluated for the message key.
    *
    * @usage
    * ```html