diff -r b7192797f434 -r c6f8b2c3dc66 src/java.desktop/share/classes/java/awt/desktop/FilesEvent.java
--- a/src/java.desktop/share/classes/java/awt/desktop/FilesEvent.java	Tue Sep 24 22:57:28 2019 +0100
+++ b/src/java.desktop/share/classes/java/awt/desktop/FilesEvent.java	Tue Sep 24 18:25:54 2019 -0700
@@ -47,6 +47,7 @@
     /**
      * The list of files.
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     final List<File> files;
 
     /**