diff --git a/SDWebImage/Core/SDWebImageDownloader.h b/SDWebImage/Core/SDWebImageDownloader.h
index e4584ddf..eec3fc18 100644
--- a/SDWebImage/Core/SDWebImageDownloader.h
+++ b/SDWebImage/Core/SDWebImageDownloader.h
@@ -137,7 +137,7 @@ typedef SDImageLoaderCompletedBlock SDWebImageDownloaderCompletedBlock;
 /**
  The download's metrics. This will be nil if download operation does not support metrics.
  */
-@property (nonatomic, strong, nullable, readonly) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0));
+@property (nonatomic, strong, nullable, readonly) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0));
 
 @end
 
diff --git a/SDWebImage/Core/SDWebImageDownloader.m b/SDWebImage/Core/SDWebImageDownloader.m
index 777349b2..6628afdc 100644
--- a/SDWebImage/Core/SDWebImageDownloader.m
+++ b/SDWebImage/Core/SDWebImageDownloader.m
@@ -27,7 +27,7 @@ static void * SDWebImageDownloaderContext = &SDWebImageDownloaderContext;
 @property (nonatomic, strong, nullable, readwrite) NSURL *url;
 @property (nonatomic, strong, nullable, readwrite) NSURLRequest *request;
 @property (nonatomic, strong, nullable, readwrite) NSURLResponse *response;
-@property (nonatomic, strong, nullable, readwrite) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0));
+@property (nonatomic, strong, nullable, readwrite) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0));
 @property (nonatomic, weak, nullable, readwrite) id downloadOperationCancelToken;
 @property (nonatomic, weak, nullable) NSOperation<SDWebImageDownloaderOperation> *downloadOperation;
 @property (nonatomic, assign, getter=isCancelled) BOOL cancelled;
@@ -534,7 +534,7 @@ didReceiveResponse:(NSURLResponse *)response
     }
 }
 
-- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0)) {
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0)) {
     
     // Identify the operation that runs this task and pass it the delegate method
     NSOperation<SDWebImageDownloaderOperation> *dataOperation = [self operationWithTask:task];
diff --git a/SDWebImage/Core/SDWebImageDownloaderOperation.h b/SDWebImage/Core/SDWebImageDownloaderOperation.h
index b0dc0791..aec9c93d 100644
--- a/SDWebImage/Core/SDWebImageDownloaderOperation.h
+++ b/SDWebImage/Core/SDWebImageDownloaderOperation.h
@@ -40,7 +40,7 @@
 
 @optional
 @property (strong, nonatomic, readonly, nullable) NSURLSessionTask *dataTask;
-@property (strong, nonatomic, readonly, nullable) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0));
+@property (strong, nonatomic, readonly, nullable) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0));
 
 // These operation-level config was inherited from downloader. See `SDWebImageDownloaderConfig` for documentation.
 @property (strong, nonatomic, nullable) NSURLCredential *credential;
@@ -75,7 +75,7 @@
  * The collected metrics from `-URLSession:task:didFinishCollectingMetrics:`.
  * This can be used to collect the network metrics like download duration, DNS lookup duration, SSL handshake duration, etc. See Apple's documentation: https://developer.apple.com/documentation/foundation/urlsessiontaskmetrics
  */
-@property (strong, nonatomic, readonly, nullable) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0));
+@property (strong, nonatomic, readonly, nullable) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0));
 
 /**
  * The credential used for authentication challenges in `-URLSession:task:didReceiveChallenge:completionHandler:`.
diff --git a/SDWebImage/Core/SDWebImageDownloaderOperation.m b/SDWebImage/Core/SDWebImageDownloaderOperation.m
index e9cf411e..5b400049 100644
--- a/SDWebImage/Core/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/Core/SDWebImageDownloaderOperation.m
@@ -73,7 +73,7 @@
 
 @property (strong, nonatomic, readwrite, nullable) NSURLSessionTask *dataTask;
 
-@property (strong, nonatomic, readwrite, nullable) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0));
+@property (strong, nonatomic, readwrite, nullable) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0));
 
 @property (strong, nonatomic, nonnull) NSOperationQueue *coderQueue; // the serial operation queue to do image decoding
 
@@ -697,7 +697,7 @@ didReceiveResponse:(NSURLResponse *)response
     }
 }
 
-- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0)) {
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics API_AVAILABLE(macos(10.12), ios(10.0), watchos(3.0), tvos(10.0)) {
     self.metrics = metrics;
 }