diff --git a/modules/services/matrix/default.nix b/modules/services/matrix/default.nix
index 4c96601..af3faa3 100644
--- a/modules/services/matrix/default.nix
+++ b/modules/services/matrix/default.nix
@@ -116,7 +116,7 @@ in {
         server_name = "${fqdn}";
         public_baseurl = "https://${fqdn}";
         enable_registration = false;
-        #registration_shared_secret = config.age.secrets.matrix-synapse;
+        extraConfig = config.age.secrets.matrix-synapse;
         #macaroon_secret_key = config.age.secrets.matrix-synapse;
         listeners = [
           { port = 8008;