diff --git a/src/domain/session/room/RoomViewModel.js b/src/domain/session/room/RoomViewModel.js
index 5415d6dd..1786741e 100644
--- a/src/domain/session/room/RoomViewModel.js
+++ b/src/domain/session/room/RoomViewModel.js
@@ -214,9 +214,9 @@ export class RoomViewModel extends ViewModel {
                            const internalId = await this._options.client.session.joinRoom(roomName);
                            this.navigation.push("room", internalId);
                        } catch (exc) {
-                           if (exc.statusCode ?? exc.status === 400) {
+                           if ((exc.statusCode ?? exc.status) === 400) {
                                this._sendError = new Error(`/join : '${roomName}' was not legal room ID or room alias`);
-                           } else if ((exc.statusCode ?? exc.status === 404) || (exc.statusCode ?? exc.status === 502) || (exc.message == "Internal Server Error")) {
+                           } else if ((exc.statusCode ?? exc.status) === 404 || (exc.statusCode ?? exc.status) === 502 || exc.message == "Internal Server Error") {
                                this._sendError = new Error(`/join : room '${roomName}' not found`);
                            } else {
                                this._sendError = new Error("join syntax: /join <room-id>");