diff --git a/paris-container.nix b/paris-container.nix
index 7efd702..d8c8e15 100644
--- a/paris-container.nix
+++ b/paris-container.nix
@@ -260,8 +260,8 @@ in {
               sssd = {
                 config_file_version = 2;
                 reconnection_retries = 3;
-                services = concatStringsSep " " [ "nss" "pam" "ssh" ];
-                domains = concatStringsSep " " [ cfg.ldap.domain ];
+                services = concatStringsSep ", " [ "nss" "pam" "ssh" ];
+                domains = concatStringsSep ", " [ cfg.ldap.domain ];
               };
 
               pam = { reconnection_retries = 3; };