diff --git a/main.js b/main.js
index 5122596..c327faa 100644
--- a/main.js
+++ b/main.js
@@ -136,7 +136,8 @@ function createOrJoinSMSRoom(tel, ournumber, callback) {
             power_level_content_override: {
                 "events": {
                     "m.room.name": 50,
-                    "m.room.power_levels": 50
+                    "m.room.power_levels": 50,
+                    "m.room.canonical_alias": 100
                 },
                 "events_default": 0,
                 "invite": 50,
@@ -147,7 +148,7 @@ function createOrJoinSMSRoom(tel, ournumber, callback) {
                 "redact": 50,
                 "state_default": 50,
                 "users": userPowerLevels,
-                "users_default": 0
+                "users_default": 50
             },
             is_direct: true,
             name: formatPhoneNumber(tel, "(NNN) NNN-NNNN"),