diff --git a/node/rpcstack.go b/node/rpcstack.go
index 20d488b734..cc4af5d6b4 100644
--- a/node/rpcstack.go
+++ b/node/rpcstack.go
@@ -473,7 +473,7 @@ func (h *virtualHostHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		h.next.ServeHTTP(w, r)
 		return
 	}
-	if _, exist := h.vhosts[host]; exist {
+	if _, exist := h.vhosts[strings.ToLower(host)]; exist {
 		h.next.ServeHTTP(w, r)
 		return
 	}