diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index 09049af..4ee159a 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -739,8 +739,8 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
 
     HTTPClient.stringEncoding = self.stringEncoding;
     HTTPClient.parameterEncoding = self.parameterEncoding;
-    HTTPClient.registeredHTTPOperationClassNames = [self.registeredHTTPOperationClassNames copyWithZone:zone];
-    HTTPClient.defaultHeaders = [self.defaultHeaders copyWithZone:zone];
+    HTTPClient.registeredHTTPOperationClassNames = [self.registeredHTTPOperationClassNames mutableCopyWithZone:zone];
+    HTTPClient.defaultHeaders = [self.defaultHeaders mutableCopyWithZone:zone];
 #ifdef _SYSTEMCONFIGURATION_H
     HTTPClient.networkReachabilityStatusBlock = self.networkReachabilityStatusBlock;
 #endif
diff --git a/README.md b/README.md
index ccc73f7..0a9c5cb 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 <p align="center" >
-  <img src="https://github.com/AFNetworking/AFNetworking/raw/gh-pages/afnetworking-logo.png" alt="AFNetworking" title="AFNetworking">
+  <img src="http://afnetworking.com/images/afnetworking.png?1344631552" alt="AFNetworking" title="AFNetworking">
 </p>
 
 [![Build Status](https://travis-ci.org/AFNetworking/AFNetworking.png?branch=master)](https://travis-ci.org/AFNetworking/AFNetworking)
@@ -23,7 +23,7 @@ Choose AFNetworking for your next project, or migrate over your existing project
 
 - [Download AFNetworking](https://github.com/AFNetworking/AFNetworking/zipball/master) and try out the included Mac and iPhone example apps
 - Read the ["Getting Started" guide](https://github.com/AFNetworking/AFNetworking/wiki/Getting-Started-with-AFNetworking), [FAQ](https://github.com/AFNetworking/AFNetworking/wiki/AFNetworking-FAQ), or [other articles in the wiki](https://github.com/AFNetworking/AFNetworking/wiki)
-- Check out the [complete documentation](http://afnetworking.github.com/AFNetworking/) for a comprehensive look at the APIs available in AFNetworking
+- Check out the [complete documentation](http://cocoadocs.org/docsets/AFNetworking/) for a comprehensive look at the APIs available in AFNetworking
 - Watch the [NSScreencast episode about AFNetworking](http://nsscreencast.com/episodes/6-afnetworking) for a quick introduction to how to use it in your application
 - Questions? [Stack Overflow](http://stackoverflow.com/questions/tagged/afnetworking) is the best place to find answers