From 1176c1d574edf44ac2a11c7c0636a90988327aa6 Mon Sep 17 00:00:00 2001
From: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
Date: Fri, 3 Aug 2018 07:56:48 -0700
Subject: [PATCH] Add detail to room alias name error message (#565)

---
 .../matrix-org/dendrite/clientapi/routing/createroom.go         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/github.com/matrix-org/dendrite/clientapi/routing/createroom.go b/src/github.com/matrix-org/dendrite/clientapi/routing/createroom.go
index a43d0080..06d76820 100644
--- a/src/github.com/matrix-org/dendrite/clientapi/routing/createroom.go
+++ b/src/github.com/matrix-org/dendrite/clientapi/routing/createroom.go
@@ -70,7 +70,7 @@ func (r createRoomRequest) Validate() *util.JSONResponse {
 	if strings.ContainsAny(r.RoomAliasName, whitespace+":") {
 		return &util.JSONResponse{
 			Code: http.StatusBadRequest,
-			JSON: jsonerror.BadJSON("room_alias_name cannot contain whitespace"),
+			JSON: jsonerror.BadJSON("room_alias_name cannot contain whitespace or ':'"),
 		}
 	}
 	for _, userID := range r.Invite {