diff --git a/src/ng/interval.js b/src/ng/interval.js
index f42a87bf972a..673df2d4ef51 100644
--- a/src/ng/interval.js
+++ b/src/ng/interval.js
@@ -41,7 +41,7 @@ function $IntervalProvider() {
       * @param {boolean=} [invokeApply=true] If set to `false` skips model dirty checking, otherwise
       *   will invoke `fn` within the {@link ng.$rootScope.Scope#$apply $apply} block.
       * @param {...*=} Pass additional parameters to the executed function.
-      * @returns {promise} A promise which will be notified on each iteration.
+      * @returns {promise} A promise which will be notified on each iteration. It will resolve once all iterations of the interval complete.
       *
       * @example
       * <example module="intervalExample" name="interval-service">