diff --git a/src/Socket/groups.ts b/src/Socket/groups.ts
index 8c9179a..18f0a09 100644
--- a/src/Socket/groups.ts
+++ b/src/Socket/groups.ts
@@ -318,7 +318,7 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 	const memberAddMode = getBinaryNodeChildString(group, 'member_add_mode') === 'all_member_add'
 	const metadata: GroupMetadata = {
 		id: groupId,
-		addressingMode: group.attrs.addressing_mode,
+		addressingMode: group.attrs.addressing_mode as "pn" | "lid",
 		subject: group.attrs.subject,
 		subjectOwner: group.attrs.s_o,
 		subjectTime: +group.attrs.s_t,
diff --git a/src/Types/GroupMetadata.ts b/src/Types/GroupMetadata.ts
index 8513f8a..614d99e 100644
--- a/src/Types/GroupMetadata.ts
+++ b/src/Types/GroupMetadata.ts
@@ -15,7 +15,7 @@ export type RequestJoinMethod = 'invite_link' | 'linked_group_join' | 'non_admin
 export interface GroupMetadata {
 	id: string
 	/** group uses 'lid' or 'pn' to send messages */
-	addressingMode: string
+	addressingMode: 'pn' | 'lid'
 	owner: string | undefined
 	subject: string
 	/** group subject owner */