diff --git a/modules/nginx.nix b/modules/nginx.nix
index 1f58702..d103d41 100644
--- a/modules/nginx.nix
+++ b/modules/nginx.nix
@@ -20,7 +20,9 @@
         locations."/" = {
           root = "/var/lib/corona";
           index = "index.html";
-          extraConfig = "add_header 'Access-Control-Allow-Origin' '*';";
+          extraConfig = ''
+            add_header 'Access-Control-Allow-Origin' '*';
+          '';
         };
       } // default;
       "cache.balsoft.ru" = {