diff --git a/AFNetworking/AFURLConnectionOperation.h b/AFNetworking/AFURLConnectionOperation.h
index 2afec5e..27d9969 100644
--- a/AFNetworking/AFURLConnectionOperation.h
+++ b/AFNetworking/AFURLConnectionOperation.h
@@ -75,7 +75,7 @@
  - A copy of an operation will not include the `outputStream` of the original.
  - Operation copies do not include `completionBlock`. `completionBlock` often strongly captures a reference to `self`, which would otherwise have the unintuitive side-effect of pointing to the _original_ operation when copied.
  */
-@interface AFURLConnectionOperation : NSOperation <NSURLConnectionDelegate, NSURLConnectionDataDelegate, NSCoding, NSCopying>
+@interface AFURLConnectionOperation : NSOperation <NSURLConnectionDelegate, NSCoding, NSCopying>
 
 ///-------------------------------
 /// @name Accessing Run Loop Modes