diff --git a/src/matrix/api.js b/src/matrix/api.js
index 7f6be01b..79dd7f08 100644
--- a/src/matrix/api.js
+++ b/src/matrix/api.js
@@ -60,7 +60,7 @@ async function createRoom(content) {
  */
 async function joinRoom(roomIDOrAlias, mxid) {
 	/** @type {Ty.R.RoomJoined} */
-	const root = await mreq.mreq("POST", path(`/client/v3/join/${roomIDOrAlias}`, mxid))
+	const root = await mreq.mreq("POST", path(`/client/v3/join/${roomIDOrAlias}`, mxid), {})
 	return root.room_id
 }