diff --git a/ops/nixos/kusakabe/default.nix b/ops/nixos/kusakabe/default.nix
index 81fac23262..6cc59cd8b6 100644
--- a/ops/nixos/kusakabe/default.nix
+++ b/ops/nixos/kusakabe/default.nix
@@ -241,7 +241,7 @@ in {
 
         backend ${serviceName}-backend
           balance roundrobin
-          ${lib.concatStringsSep "\n  " (backendsToLine service.backendPort "check ${if service.sendProxy then "send-proxy-v2" else ""}" service.backends)}
+          ${lib.concatStringsSep "\n  " (backendsToLine service.backendPort "check ${if (service.sendProxy && false) then "send-proxy-v2" else ""}" service.backends)}
       '';
     in ''
       global