diff --git a/swagger_py_codegen/_version.py b/swagger_py_codegen/_version.py
index 811eb05..1da5f08 100644
--- a/swagger_py_codegen/_version.py
+++ b/swagger_py_codegen/_version.py
@@ -1,4 +1,4 @@
 """Version information."""
 
 # The following line *must* be the last in the module, exactly as formatted:
-__version__ = "0.3.6"
+__version__ = "0.3.7"
diff --git a/swagger_py_codegen/parser.py b/swagger_py_codegen/parser.py
index ca5a803..42710de 100644
--- a/swagger_py_codegen/parser.py
+++ b/swagger_py_codegen/parser.py
@@ -45,7 +45,7 @@ def __eq__(self, other):
             return False
 
     def __deepcopy__(self, memo):
-        return RefNode(self._data, self.ref)
+        return RefNode(copy.deepcopy(self._data), self.ref)
 
     def copy(self):
         return RefNode(self._data, self.ref)
diff --git a/swagger_py_codegen/templates/falcon/blueprint.tpl b/swagger_py_codegen/templates/falcon/blueprint.tpl
index d4c8b0d..b2b4228 100644
--- a/swagger_py_codegen/templates/falcon/blueprint.tpl
+++ b/swagger_py_codegen/templates/falcon/blueprint.tpl
@@ -4,7 +4,7 @@ from __future__ import absolute_import, print_function
 import falcon
 
 from .routes import routes
-from .validators import security
+from .validators import security, current
 
 
 @security.scopes_loader
diff --git a/swagger_py_codegen/templates/falcon/validators.tpl b/swagger_py_codegen/templates/falcon/validators.tpl
index 965dde3..7cf4ca9 100644
--- a/swagger_py_codegen/templates/falcon/validators.tpl
+++ b/swagger_py_codegen/templates/falcon/validators.tpl
@@ -33,6 +33,14 @@ def _path_to_endpoint(path):
     return _remove_characters(endpoint, '{}')
 
 
+class Current(object):
+
+    request = None
+
+
+current = Current()
+
+
 class JSONEncoder(json.JSONEncoder):
 
     def default(self, o):
@@ -92,11 +100,12 @@ class FalconValidatorAdaptor(object):
 
 def request_validate(req, resp, resource, params):
 
+    current.request = req
     endpoint = _path_to_endpoint(req.uri_template)
     # scope
     if (endpoint, req.method) in scopes and not set(
             scopes[(endpoint, req.method)]).issubset(set(security.scopes)):
-        falcon.HTTPUnauthorized('403403403')
+        raise falcon.HTTPUnauthorized('invalid client')
     # data
     method = req.method
     if method == 'HEAD':
@@ -113,11 +122,11 @@ def request_validate(req, resp, resource, params):
             try:
                 value = json.loads(body.decode('utf-8'))
             except (ValueError, UnicodeDecodeError):
-                raise falcon.HTTPError(falcon.HTTP_753,
-                                       'Malformed JSON',
-                                       'Could not decode the request body. The '
-                                       'JSON was incorrect or not encoded as '
-                                       'UTF-8.')
+                raise falcon.HTTPUnprocessableEntity(
+                    'Malformed JSON',
+                    'Could not decode the request body. The '
+                    'JSON was incorrect or not encoded as '
+                    'UTF-8.')
         if value is None:
             value = MultiDict()
         validator = FalconValidatorAdaptor(schema)