diff --git a/src/RoomInvite.js b/src/RoomInvite.js
index ceb3dd0fda..427f549eb0 100644
--- a/src/RoomInvite.js
+++ b/src/RoomInvite.js
@@ -127,7 +127,7 @@ function _onRoomInviteFinished(roomId, shouldInvite, addrs) {
 }
 
 function _isDmChat(addrTexts) {
-    if (addrTexts.length === 1 && getAddressType(addrTexts[0]) === 'mx') {
+    if (addrTexts.length === 1 && getAddressType(addrTexts[0]) === 'mx-user-id') {
         return true;
     } else {
         return false;
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index f071d42f56..4338287be3 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -582,9 +582,7 @@
     "Confirm Removal": "Confirm Removal",
     "Are you sure you wish to remove (delete) this event? Note that if you delete a room name or topic change, it could undo the change.": "Are you sure you wish to remove (delete) this event? Note that if you delete a room name or topic change, it could undo the change.",
     "%(actionVerb)s this person?": "%(actionVerb)s this person?",
-    "Community IDs must be of the form +localpart:%(domain)s": "Community IDs must be of the form +localpart:%(domain)s",
     "Community IDs may only contain alphanumeric characters": "Community IDs may only contain alphanumeric characters",
-    "It is currently only possible to create communities on your own home server: use a community ID ending with %(domain)s": "It is currently only possible to create communities on your own home server: use a community ID ending with %(domain)s",
     "Room creation failed": "Room creation failed",
     "Create Community": "Create Community",
     "Community Name": "Community Name",