diff --git a/src/WABinary/encode.ts b/src/WABinary/encode.ts
index 929c2a3..2823a44 100644
--- a/src/WABinary/encode.ts
+++ b/src/WABinary/encode.ts
@@ -52,10 +52,10 @@ export const encodeBinaryNode = (
 		pushBytes(bytes)
 	}
 
-	const writeJid = ({ agent, device, user, server }: FullJid) => {
+	const writeJid = ({ domainType, device, user, server }: FullJid) => {
 		if(typeof agent !== 'undefined' || typeof device !== 'undefined') {
 			pushByte(TAGS.AD_JID)
-			pushByte(agent || 0)
+			pushByte(domainType || 0)
 			pushByte(device || 0)
 			writeString(user)
 		} else {
@@ -233,4 +233,4 @@ export const encodeBinaryNode = (
 	}
 
 	return Buffer.from(buffer)
-}
\ No newline at end of file
+}