diff --git a/format/markdown.go b/format/markdown.go
index 3b1c1f51..77ced0dc 100644
--- a/format/markdown.go
+++ b/format/markdown.go
@@ -64,6 +64,13 @@ func MarkdownMentionWithName(name string, id uriAble) string {
 	return MarkdownLink(name, id.URI().MatrixToURL())
 }
 
+func MarkdownMentionRoomID(name string, id id.RoomID, via ...string) string {
+	if name == "" {
+		name = id.String()
+	}
+	return MarkdownLink(name, id.URI(via...).MatrixToURL())
+}
+
 func MarkdownLink(name string, url string) string {
 	return fmt.Sprintf("[%s](%s)", EscapeMarkdown(name), EscapeMarkdown(url))
 }