diff --git a/bridge/matrix/matrix.go b/bridge/matrix/matrix.go
index 49fc33b3..7068482a 100644
--- a/bridge/matrix/matrix.go
+++ b/bridge/matrix/matrix.go
@@ -127,7 +127,7 @@ func (b *Bmatrix) Disconnect() error {
 
 func (b *Bmatrix) JoinChannel(channel config.ChannelInfo) error {
 	return b.retry(func() error {
-		resp, err := b.mc.JoinRoom(channel.Name, "", nil)
+		resp, err := b.mc.JoinRoom(channel.Name, "", struct{}{})
 		if err != nil {
 			return err
 		}