diff --git a/mllib/src/main/scala/org/apache/spark/mllib/point/PointConverter.scala b/mllib/src/main/scala/org/apache/spark/mllib/point/PointConverter.scala
index 022d2304423d1..2da986aee8623 100644
--- a/mllib/src/main/scala/org/apache/spark/mllib/point/PointConverter.scala
+++ b/mllib/src/main/scala/org/apache/spark/mllib/point/PointConverter.scala
@@ -20,6 +20,9 @@ package org.apache.spark.mllib.point
 import org.apache.spark.rdd.RDD
 import org.apache.spark.mllib.regression.LabeledPoint
 
+/**
+ * Class to convert between different point formats.
+ */
 object PointConverter {
 
   implicit def LabeledPoint2WeightedLabeledPoint(