diff --git a/src/WABinary/jid-utils.ts b/src/WABinary/jid-utils.ts
index 45ceef6..d7cbbea 100644
--- a/src/WABinary/jid-utils.ts
+++ b/src/WABinary/jid-utils.ts
@@ -46,6 +46,8 @@ export const areJidsSameUser = (jid1: string | undefined, jid2: string | undefin
 )
 /** is the jid a user */
 export const isJidUser = (jid: string | undefined) => (jid?.endsWith('@s.whatsapp.net'))
+/** is the jid a group */
+export const isLidUser = (jid: string | undefined) => (jid?.endsWith('@lid'))
 /** is the jid a broadcast */
 export const isJidBroadcast = (jid: string | undefined) => (jid?.endsWith('@broadcast'))
 /** is the jid a group */