diff --git a/src/commonMain/kotlin/pw/binom/llmproxy/Main.kt b/src/commonMain/kotlin/pw/binom/llmproxy/Main.kt
index 08ff803..e332eed 100644
--- a/src/commonMain/kotlin/pw/binom/llmproxy/Main.kt
+++ b/src/commonMain/kotlin/pw/binom/llmproxy/Main.kt
@@ -253,7 +253,7 @@ private suspend fun handleChat(
     }
 
     if (anyClaimed) {
-        call.respondText(errorJson("all upstreams failed"), ContentType.Application.Json, HttpStatusCode.BadGateway)
+        call.respondText(errorJson("all upstreams failed"), ContentType.Application.Json, HttpStatusCode.ServiceUnavailable)
     } else {
         call.respondText(errorJson("all upstreams busy"), ContentType.Application.Json, HttpStatusCode.ServiceUnavailable)
     }