diff --git a/src/ng/q.js b/src/ng/q.js
index 9466a2e9384d..8bb9536b6672 100644
--- a/src/ng/q.js
+++ b/src/ng/q.js
@@ -53,6 +53,8 @@
  *
  * Note: progress/notify callbacks are not currently supported via the ES6-style interface.
  *
+ * Note: unlike ES6 behaviour, an exception thrown in the constructor function will NOT implicitly reject the promise.
+ *
  * However, the more traditional CommonJS-style usage is still available, and documented below.
  *
  * [The CommonJS Promise proposal](http://wiki.commonjs.org/wiki/Promises) describes a promise as an