diff -r 1985e35e97b2 -r 7873d37f5b37 src/share/classes/com/sun/tools/javac/tree/Pretty.java
--- a/src/share/classes/com/sun/tools/javac/tree/Pretty.java	Mon Jan 21 11:16:28 2013 -0800
+++ b/src/share/classes/com/sun/tools/javac/tree/Pretty.java	Mon Jan 21 20:13:56 2013 +0000
@@ -946,7 +946,7 @@
     public void visitLambda(JCLambda tree) {
         try {
             print("(");
-            if (TreeInfo.isExplicitLambda(tree)) {
+            if (tree.paramKind == JCLambda.ParameterKind.EXPLICIT) {
                 printExprs(tree.params);
             } else {
                 String sep = "";