diff --git a/scrapy/contracts/__init__.py b/scrapy/contracts/__init__.py
index b3f02a291..7b6591d86 100644
--- a/scrapy/contracts/__init__.py
+++ b/scrapy/contracts/__init__.py
@@ -90,9 +90,9 @@ class ContractsManager(object):
         cb = request.callback
 
         @wraps(cb)
-        def cb_wrapper(response):
+        def cb_wrapper(response, **cb_kwargs):
             try:
-                output = cb(response, **request.cb_kwargs)
+                output = cb(response, **cb_kwargs)
                 output = list(iterate_spider_output(output))
             except Exception:
                 case = _create_testcase(method, 'callback')
@@ -121,7 +121,7 @@ class Contract(object):
             cb = request.callback
 
             @wraps(cb)
-            def wrapper(response):
+            def wrapper(response, **cb_kwargs):
                 try:
                     results.startTest(self.testcase_pre)
                     self.pre_process(response)
@@ -133,7 +133,7 @@ class Contract(object):
                 else:
                     results.addSuccess(self.testcase_pre)
                 finally:
-                    return list(iterate_spider_output(cb(response, **request.cb_kwargs)))
+                    return list(iterate_spider_output(cb(response, **cb_kwargs)))
 
             request.callback = wrapper
 
@@ -144,8 +144,8 @@ class Contract(object):
             cb = request.callback
 
             @wraps(cb)
-            def wrapper(response):
-                output = list(iterate_spider_output(cb(response, **request.cb_kwargs)))
+            def wrapper(response, **cb_kwargs):
+                output = list(iterate_spider_output(cb(response, **cb_kwargs)))
                 try:
                     results.startTest(self.testcase_post)
                     self.post_process(output)