diff --git a/src/main/java/eu/siacs/conversations/entities/MucOptions.java b/src/main/java/eu/siacs/conversations/entities/MucOptions.java
index 1c87a646e8a39fd9ff8460e119e319e7b87977d2..0f227660d1965eb85ebd617f5355a8a16961f231 100644
--- a/src/main/java/eu/siacs/conversations/entities/MucOptions.java
+++ b/src/main/java/eu/siacs/conversations/entities/MucOptions.java
@@ -176,7 +176,8 @@ public class MucOptions {
     }
 
     public boolean participantsCanChangeSubject() {
-        final Field field = getRoomInfoForm().getFieldByName("muc#roominfo_changesubject");
+        Field field = getRoomInfoForm().getFieldByName("muc#roomconfig_changesubject");
+        if (field == null) field = getRoomInfoForm().getFieldByName("muc#roominfo_changesubject");
         return field != null && "1".equals(field.getValue());
     }
 
diff --git a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
index a85ca3641021f19430dd176d6bd574dcbc6c988f..fe13b1113bda4f805a98a43f29fd90656ba2379c 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
@@ -155,6 +155,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
             builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
                 Bundle options = configuration.toBundle(values);
                 options.putString("muc#roomconfig_persistentroom", "1");
+                options.putString("{http://prosody.im/protocol/muc}roomconfig_allowmemberinvites", options.getString("muc#roomconfig_allowinvites"));
                 xmppConnectionService.pushConferenceConfiguration(mConversation,
                         options,
                         ConferenceDetailsActivity.this);