diff --git a/lib/http.go b/lib/http.go
index 7d733a3..f301bc1 100644
--- a/lib/http.go
+++ b/lib/http.go
@@ -135,8 +135,11 @@ func (state *State) handleRequest(w http.ResponseWriter, r *http.Request) {
 
 	data := challenge.RequestDataFromContext(r.Context())
 
+	lg := state.Logger(r)
+
 	backend := state.GetBackend(host)
 	if backend == nil {
+		lg.Debug("no backend for host", "host", host)
 		http.Error(w, http.StatusText(http.StatusServiceUnavailable), http.StatusServiceUnavailable)
 		return
 	}
@@ -154,8 +157,6 @@ func (state *State) handleRequest(w http.ResponseWriter, r *http.Request) {
 		return backend
 	}
 
-	lg := state.Logger(r)
-
 	cleanupRequest := func(r *http.Request, fromChallenge bool) {
 		if fromChallenge {
 			r.Header.Del("Referer")
diff --git a/lib/settings/bind.go b/lib/settings/bind.go
index 6e8a83b..ae3f0ac 100644
--- a/lib/settings/bind.go
+++ b/lib/settings/bind.go
@@ -92,6 +92,7 @@ func (b *Bind) Server(backends map[string]http.Handler, acmeCachePath string) (*
 		swap(http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			backend := utils.SelectHTTPHandler(backends, r.Host)
 			if backend == nil {
+				slog.Debug("no backend for host", "host", r.Host)
 				http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
 			} else {
 				backend.ServeHTTP(w, r)