diff --git a/SDWebImage/SDWebImageDownloaderOperation.h b/SDWebImage/SDWebImageDownloaderOperation.h
index 7a995d2a..c6debc38 100644
--- a/SDWebImage/SDWebImageDownloaderOperation.h
+++ b/SDWebImage/SDWebImageDownloaderOperation.h
@@ -30,6 +30,12 @@ extern NSString *const SDWebImageDownloadFinishNotification;
 
 @property (assign, nonatomic) BOOL shouldDecompressImages;
 
+/**
+ *  Was used to determine whether the URL connection should consult the credential storage for authenticating the connection.
+ *  @deprecated Not used for a couple of versions
+ */
+@property (nonatomic, assign) BOOL shouldUseCredentialStorage __deprecated_msg("Property deprecated. Does nothing. Kept only for backwards compatibility");
+
 /**
  * The credential used for authentication challenges in `-connection:didReceiveAuthenticationChallenge:`.
  *