diff --git a/src/ol/collection.exports b/src/ol/collection.exports
index 5d64b817fb..5e00258f1b 100644
--- a/src/ol/collection.exports
+++ b/src/ol/collection.exports
@@ -2,6 +2,7 @@
 @exportProperty ol.Collection.prototype.clear
 @exportProperty ol.Collection.prototype.extend
 @exportProperty ol.Collection.prototype.forEach
+@exportProperty ol.Collection.prototype.getArray
 @exportProperty ol.Collection.prototype.getAt
 @exportProperty ol.Collection.prototype.getLength
 @exportProperty ol.Collection.prototype.insertAt
diff --git a/src/ol/collection.js b/src/ol/collection.js
index 993efd2a6c..7034e69135 100644
--- a/src/ol/collection.js
+++ b/src/ol/collection.js
@@ -120,6 +120,10 @@ ol.Collection.prototype.forEach = function(f, opt_obj) {
 
 
 /**
+ * Get a reference to the underlying Array object. Warning: if the array
+ * is mutated, no events will be dispatched by the collection, and the
+ * collection's "length" property won't be in sync with the actual length
+ * of the array.
  * @return {Array} Array.
  */
 ol.Collection.prototype.getArray = function() {