--- old/src/share/classes/sun/reflect/generics/tree/BooleanSignature.java	2014-11-27 09:55:08.115917093 +0300
+++ new/src/share/classes/sun/reflect/generics/tree/BooleanSignature.java	2014-11-27 09:55:07.908023709 +0300
@@ -29,7 +29,7 @@
 
 /** AST that represents the type boolean. */
 public class BooleanSignature implements BaseType {
-    private static BooleanSignature singleton = new BooleanSignature();
+    private static final BooleanSignature singleton = new BooleanSignature();
 
     private BooleanSignature(){}