diff --git a/examples/openapi3.py b/examples/openapi3.py
index 51b9107..849fd2c 100644
--- a/examples/openapi3.py
+++ b/examples/openapi3.py
@@ -82,6 +82,7 @@ def cors_response(req, res):
 @app.before_response()
 def before_each_response(req):
     """Check API before process each response."""
+    log.warn("BEFORE")
     req.api = OpenAPIRequest(req)
     try:
         unmarshal_request(req.api, app.openapi_spec)
@@ -100,9 +101,14 @@ def before_each_response(req):
 @app.after_response()
 def after_each_response(req, res):
     """Check if ansewer is valid by OpenAPI."""
+    log.warn("AFTER")
     if not hasattr(req, "api"):
         req.api = OpenAPIRequest(req)
     try:
+        log.error("X type of request: %s", type(req))
+        log.error("X mro of request: %s", type(req).__mro__)
+        log.error("X type of request: %s", type(req.api))
+        log.error("X mro of request: %s", type(req.api).__mro__)
         unmarshal_response(
                 req.api,
                 OpenAPIResponse(res),
diff --git a/poorwsgi/openapi_wrapper.py b/poorwsgi/openapi_wrapper.py
index ffdf9b7..ff1fd8d 100644
--- a/poorwsgi/openapi_wrapper.py
+++ b/poorwsgi/openapi_wrapper.py
@@ -6,6 +6,7 @@
 :Classes:   OpenAPIRequest, OpenAPIResponse
 """
 from collections import OrderedDict
+import logging
 
 import re
 
@@ -13,7 +14,7 @@
 from openapi_core.validation.request.datatypes import RequestParameters
 
 
-class OpenAPIRequest(Request):
+class OpenAPIRequest():
     """Wrapper of PoorWSGI request to OpenAPIRequest.
 
     Be careful with testing of big incoming request body property, which
@@ -29,21 +30,25 @@ def __init__(self, request):
     @property
     def host_url(self):
         """Return host_url for validator."""
+        logging.warning("-> host_url")
         return self.request.construct_url('')
 
     @property
     def path(self):
         """Return method path"""
+        logging.warning("-> path")
         return self.request.path
 
     @property
     def method(self):
         """Return method in lower case for validator."""
+        logging.warning("-> method")
         return self.request.method.lower()
 
     @property
     def full_url_pattern(self):
         """Return full_url_pattern for validator."""
+        logging.warning("-> full_url_pattern")
         if self.request.uri_rule is None:
             return self.host_url+self.request.uri
         return self.host_url+OpenAPIRequest.re_pattern.sub(
@@ -52,6 +57,7 @@ def full_url_pattern(self):
     @property
     def parameters(self):
         """Return RequestParameters object for validator."""
+        logging.warning("-> parameters")
         path_args = OrderedDict()
         for (key, val) in self.request.path_args.items():
             # allowed openapi core types...
@@ -70,11 +76,13 @@ def parameters(self):
     @property
     def body(self):
         """Return request data for validator."""
+        logging.warning("-> body")
         return self.request.data
 
     @property
     def mimetype(self):
         """Return request mime_type for validator."""
+        logging.warning("-> mime_type")
         return self.request.mime_type
 
 
diff --git a/tests_integrity/test_openapi.py b/tests_integrity/test_openapi.py
index 2d013ec..b2430c2 100644
--- a/tests_integrity/test_openapi.py
+++ b/tests_integrity/test_openapi.py
@@ -85,6 +85,7 @@ def test_json_post_unicode(self, url):
                         method="POST", json=data,
                         response_spec=SPEC)
         assert res.json()["request"] == data
+        assert False
 
     def test_json_post_unicode_struct(self, url):
         data = {"city": "Česká Lípa"}