diff -r f5e8a8275078 -r 9918d2d14f78 jdk/src/share/classes/java/util/Comparator.java
--- a/jdk/src/share/classes/java/util/Comparator.java	Mon Sep 16 14:51:48 2013 +0100
+++ b/jdk/src/share/classes/java/util/Comparator.java	Mon Sep 16 10:28:20 2013 -0700
@@ -230,7 +230,7 @@
      * @param  keyComparator the {@code Comparator} used to compare the sort key
      * @return a lexicographic-order comparator composed of this comparator
      *         and then comparing on the key extracted by the keyExtractor function
-     * @throws NullPointerException if the argument is null.
+     * @throws NullPointerException if either argument is null.
      * @see #comparing(Function, Comparator)
      * @see #thenComparing(Comparator)
      * @since 1.8