--- a/langtools/src/share/classes/com/sun/tools/javac/tree/TreeMaker.java	Sat Sep 14 15:23:21 2013 +0100
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/TreeMaker.java	Sat Sep 14 19:04:47 2013 +0100
@@ -890,7 +890,7 @@
     /** Create a value parameter tree from its name, type, and owner.
      */
     public JCVariableDecl Param(Name name, Type argtype, Symbol owner) {
-        return VarDef(new VarSymbol(0, name, argtype, owner), null);
+        return VarDef(new VarSymbol(PARAMETER, name, argtype, owner), null);
     }
 
     /** Create a a list of value parameter trees x0, ..., xn from a list of