diff --git a/nixos/modules/services/web-apps/tt-rss.nix b/nixos/modules/services/web-apps/tt-rss.nix
index abe4748591e..b92e3449894 100644
--- a/nixos/modules/services/web-apps/tt-rss.nix
+++ b/nixos/modules/services/web-apps/tt-rss.nix
@@ -548,7 +548,7 @@ let
             index = "index.php";
           };
 
-          locations."~ \.php$" = {
+          locations."~ \\.php$" = {
             extraConfig = ''
               fastcgi_split_path_info ^(.+\.php)(/.+)$;
               fastcgi_pass unix:${config.services.phpfpm.pools.${cfg.pool}.socket};