diff --git a/AFNetworking/AFURLSessionManager.m b/AFNetworking/AFURLSessionManager.m
index 6669b3c0be..9eb14095cf 100644
--- a/AFNetworking/AFURLSessionManager.m
+++ b/AFNetworking/AFURLSessionManager.m
@@ -485,7 +485,9 @@ @interface AFURLSessionManager ()
 @property (readwrite, nonatomic, copy) AFURLSessionTaskNeedNewBodyStreamBlock taskNeedNewBodyStream;
 @property (readwrite, nonatomic, copy) AFURLSessionTaskDidSendBodyDataBlock taskDidSendBodyData;
 @property (readwrite, nonatomic, copy) AFURLSessionTaskDidCompleteBlock taskDidComplete;
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
 @property (readwrite, nonatomic, copy) AFURLSessionTaskDidFinishCollectingMetricsBlock taskDidFinishCollectingMetrics;
+#endif
 @property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidReceiveResponseBlock dataTaskDidReceiveResponse;
 @property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidBecomeDownloadTaskBlock dataTaskDidBecomeDownloadTask;
 @property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidReceiveDataBlock dataTaskDidReceiveData;