diff --git a/src/Socket/groups.ts b/src/Socket/groups.ts
index b811e72d..1c67e386 100644
--- a/src/Socket/groups.ts
+++ b/src/Socket/groups.ts
@@ -346,7 +346,7 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 		participants: getBinaryNodeChildren(group, 'participant').map(({ attrs }) => {
 			return {
 				id: attrs.jid!,
-				phoneNumber: isLidUser(attrs.jid) && isPnUser(attrs.phoneNumber) ? attrs.phoneNumber : undefined,
+				phoneNumber: isLidUser(attrs.jid) && isPnUser(attrs.phone_number) ? attrs.phone_number : undefined,
 				lid: isPnUser(attrs.jid) && isLidUser(attrs.lid) ? attrs.lid : undefined,
 				admin: (attrs.type || null) as GroupParticipant['admin']
 			}