diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index 7a5edd4..05032eb 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -573,7 +573,6 @@ static void AFNetworkReachabilityReleaseCallback(const void *info) {
                             completionBlock:(void (^)(NSArray *operations))completionBlock
 {
     __block dispatch_group_t dispatchGroup = dispatch_group_create();
-    dispatch_retain(dispatchGroup);
     NSBlockOperation *batchedOperation = [NSBlockOperation blockOperationWithBlock:^{
         dispatch_group_notify(dispatchGroup, dispatch_get_main_queue(), ^{
             if (completionBlock) {