diff --git a/src/ol/source/vectorsource.js b/src/ol/source/vectorsource.js
index fb9f2d841e..5b92bdddad 100644
--- a/src/ol/source/vectorsource.js
+++ b/src/ol/source/vectorsource.js
@@ -171,7 +171,8 @@ ol.source.Vector.prototype.addFeaturesInternal = function(features) {
 
 
 /**
- * Clear the source
+ * Remove all features.
+ * @todo api
  */
 ol.source.Vector.prototype.clear = function() {
   this.rBush_.forEach(this.removeFeatureInternal, this);