diff --git a/matrix.yml b/matrix.yml
index 6110f22..8de4e15 100644
--- a/matrix.yml
+++ b/matrix.yml
@@ -176,7 +176,7 @@
               "features": {},
               "default_federate": true,
               "default_theme": "dark",
-              "default_device_display_name" : "Matrix"
+              "default_device_display_name" : "Matrix",
               "room_directory": {
                   "servers": ["matrix.{{inventory_hostname}}", "matrix.org"]
               },