diff --git a/matrix.go b/matrix.go
index b03bb10..570eeee 100644
--- a/matrix.go
+++ b/matrix.go
@@ -101,7 +101,7 @@ type MBMatrixClient interface {
 	SendMessage(roomID, text string) (eventID string, err error)
 	SendMessagef(roomID, text string, args ...interface{}) (eventID string, err error)
 	SendContent(roomID string, content gomatrix.Content) (eventID string, err error)
-	SendMessageEvent(roomID string, content interface{}) (eventID string, err error)
+	SendMessageEvent(roomID string, evtType gomatrix.EventType, content interface{}) (eventID string, err error)
 }
 
 type MatrixClient interface {