diff --git a/plinth/modules/matrixsynapse/templates/matrix-synapse-pre-setup.html b/plinth/modules/matrixsynapse/templates/matrix-synapse-pre-setup.html
index 8935734d8..561be4487 100644
--- a/plinth/modules/matrixsynapse/templates/matrix-synapse-pre-setup.html
+++ b/plinth/modules/matrixsynapse/templates/matrix-synapse-pre-setup.html
@@ -24,8 +24,8 @@
 
   <div class="alert alert-warning" role="alert">
     {% blocktrans %}
-      <strong>Warning!</strong> Changing the domain name after the initial
-      setup is currently not supported.
+      <strong>Warning!</strong> Changing the domain name after this step will
+      require uninstalling and reinstalling the app which will wipe app's data.
     {% endblocktrans %}
   </div>