diff --git a/iOS-Usage.md b/iOS-Usage.md
index 99f32d4..bb97969 100644
--- a/iOS-Usage.md
+++ b/iOS-Usage.md
@@ -12,6 +12,9 @@ If you want to work on an encrypted iOS/iPadOS Backup, you should install iphone
 ```sh
 pip install git+https://github.com/KnugiHK/iphone_backup_decrypt
 ```
+> [!NOTE]
+> You will need to disable the built-in end-to-end encryption for WhatsApp backups. See [WhatsApp's FAQ](https://faq.whatsapp.com/490592613091019#turn-off-end-to-end-encrypted-backup) for how to do it.
+
 ## Extracting
 Simply invoke the following command from shell, remember to replace the username and device id correspondingly in the command.
 ### Windows