diff --git a/README.md b/README.md
index 33317d0..228e008 100644
--- a/README.md
+++ b/README.md
@@ -487,7 +487,7 @@ const sendMsg = await sock.sendMessage(id, templateMessage)
         mimetype: Mimetype.pdf, /* (for media messages) specify the type of media (optional for all media types except documents),
                                     import {Mimetype} from '@adiwajshing/baileys'
                                 */
-        filename: 'somefile.pdf', // (for media messages) file name for the media
+        fileName: 'somefile.pdf', // (for media messages) file name for the media
         /* will send audio messages as voice notes, if set to true */
         ptt: true,
         // will detect links & generate a link preview automatically (default true)