diff --git a/core/src/main/scala/org/apache/spark/Partition.scala b/core/src/main/scala/org/apache/spark/Partition.scala
index 27892dbd2a0bc..1d02f186ea93f 100644
--- a/core/src/main/scala/org/apache/spark/Partition.scala
+++ b/core/src/main/scala/org/apache/spark/Partition.scala
@@ -18,7 +18,7 @@
 package org.apache.spark
 
 /**
- * A partition of an RDD.
+ * A partition of an RDD. Yup.
  */
 trait Partition extends Serializable {
   /**