@@ -156,11 +156,11 @@
             p[0].duration = p[2]
 
     def node(p):
         '''node: NODE
         '''
-        p[0] = tree.tree(node.strip("(").strip(")"))
+        p[0] = tree.Tree(node.strip("(").strip(")"))
 
 
     def p_error(p):
         raise Exception("Syntax error at '%s' of element type %s" % (p.value, p.type))