1 files changed, 4 insertions, 3 deletions
diff --git a/lib/wsdl/xmlSchema/attribute.rb b/lib/wsdl/xmlSchema/attribute.rb
index cfd4c68422..c82bd13bde 100644
--- a/lib/wsdl/xmlSchema/attribute.rb
+++ b/lib/wsdl/xmlSchema/attribute.rb
@@ -18,10 +18,11 @@ class Attribute < Info
     if RUBY_VERSION > "1.7.0"
       def attr_reader_ref(symbol)
         name = symbol.to_s
-        self.__send__(:define_method, name, proc {
-          instance_variable_get("@#{name}") ||
+        iv = "@#{name}"
+        define_method(name) {
+          instance_variable_get(iv) ||
             (refelement ? refelement.__send__(name) : nil)
-        })
+        }
       end
     else
       def attr_reader_ref(symbol)