diff --git a/nixos/modules/services/mail/roundcube.nix b/nixos/modules/services/mail/roundcube.nix
index c58832daac19..3c15fbedfc9c 100644
--- a/nixos/modules/services/mail/roundcube.nix
+++ b/nixos/modules/services/mail/roundcube.nix
@@ -190,7 +190,6 @@ in
             priority = 1100;
             extraConfig = ''
               add_header Cache-Control 'public, max-age=604800, must-revalidate';
-              client_max_body_size ${toString cfg.maxAttachmentSize};
             '';
           };
           locations."~ ^/(SQL|bin|config|logs|temp|vendor)/" = {
@@ -213,6 +212,8 @@ in
               fastcgi_param PATH_INFO $fastcgi_path_info;
               fastcgi_split_path_info ^(.+\.php)(/.+)$;
               include ${config.services.nginx.package}/conf/fastcgi.conf;
+
+              client_max_body_size ${toString cfg.maxAttachmentSize};
             '';
           };
         };