diff --git a/apiclient/http.py b/apiclient/http.py
index d616c07..70255a3 100644
--- a/apiclient/http.py
+++ b/apiclient/http.py
@@ -12,7 +12,7 @@
     'HttpRequest', 'RequestMockBuilder'
     ]
 
-from httplib2 import Response
+import httplib2
 from apiclient.model import JsonModel
 
 
@@ -86,7 +86,7 @@
     self.content = content
     self.postproc = postproc
     if resp is None:
-      self.resp = Response({'status': 200, 'reason': 'OK'})
+      self.resp = httplib2.Response({'status': 200, 'reason': 'OK'})
     if 'reason' in self.resp:
       self.resp.reason = self.resp['reason']