diff -r 2b02517c73a2 -r a431edba1629 jdk/src/java.prefs/share/classes/module-info.java
--- a/jdk/src/java.prefs/share/classes/module-info.java	Wed Mar 29 13:16:12 2017 +0100
+++ b/jdk/src/java.prefs/share/classes/module-info.java	Wed Mar 29 09:40:41 2017 -0700
@@ -26,6 +26,7 @@
 /**
  * Defines the Preferences API.
  *
+ * @moduleGraph
  * @since 9
  */
 module java.prefs {