diff --git a/systems/LoutreOS/services.nix b/systems/LoutreOS/services.nix
index 0a9ad17..a76d502 100644
--- a/systems/LoutreOS/services.nix
+++ b/systems/LoutreOS/services.nix
@@ -250,15 +250,14 @@ in
           x_forwarded = true;
         }
       ];
+      max_upload_size = "100M";
       database_type = "psycopg2";
       database_args = {
         database = "matrix-synapse";
       };
       tls_private_key_path = "/var/lib/acme/${domaine}/key.pem";
       tls_certificate_path = "/var/lib/acme/${domaine}/fullchain.pem";
-      extraConfig = ''
-        max_upload_size: "100M"
-      '';
+      url_preview_enabled = true;
       logConfig = ''
         version: 1