diff --git a/src/share/classes/java/nio/channels/SelectionKey.java b/src/share/classes/java/nio/channels/SelectionKey.java
index 7acb692ccd074ef1b5816906dceda958128f66fd..00fd36f463a894a0c29bdf440d801de12f1e8129 100644
--- a/src/share/classes/java/nio/channels/SelectionKey.java
+++ b/src/share/classes/java/nio/channels/SelectionKey.java
@@ -191,7 +191,7 @@ public abstract class SelectionKey {
      * @throws  IllegalArgumentException
      *          If a bit in the set does not correspond to an operation that
      *          is supported by this key's channel, that is, if
-     *          <tt>set & ~(channel().validOps()) != 0</tt>
+     *          <tt>(ops & ~channel().validOps()) != 0</tt>
      *
      * @throws  CancelledKeyException
      *          If this key has been cancelled