diff --git a/README.md b/README.md
index 9c500bb..56391cd 100644
--- a/README.md
+++ b/README.md
@@ -781,7 +781,7 @@ Of course, replace ``` xyz ``` with an actual ID.
 
 - To join the group using groupInviteMessage
     ``` ts
-    const response = await sock.groupAcceptInviteV4(groupInviteMessage)
+    const response = await sock.groupAcceptInviteV4("abcd@s.whatsapp.net", groupInviteMessage)
     console.log("joined to: " + response)
     ```
   Of course, replace ``` xxx ``` with invitation code.