diff --git a/hosts/fw.cloonar.com/modules/gitea.nix b/hosts/fw.cloonar.com/modules/gitea.nix
index be492ee..a1ee63d 100644
--- a/hosts/fw.cloonar.com/modules/gitea.nix
+++ b/hosts/fw.cloonar.com/modules/gitea.nix
@@ -71,8 +71,8 @@ in
           "/var/lib/acme/git.cloonar.com:/opt/bitnami/gitea/ssl:ro"
         ];
         environment = {
-          USER_UID = "${config.users.users.gitea.uid}";
-          USER_GID = "${config.users.groups.gitea.gid}";
+          USER_UID = builtins.toString config.users.users.gitea.uid;
+          USER_GID = builtins.toString config.users.groups.gitea.gid;
         };
         extraOptions = [
           "--ip=${ip}"