diff --git a/node/rpcstack.go b/node/rpcstack.go
index 0abad11f95..5ef9ec22c4 100644
--- a/node/rpcstack.go
+++ b/node/rpcstack.go
@@ -80,6 +80,7 @@ func (h *virtualHostHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		// Either invalid (too many colons) or no port specified
 		host = r.Host
 	}
+	host = strings.ToLower(host)
 	if ipAddr := net.ParseIP(host); ipAddr != nil {
 		// It's an IP address, we can serve that
 		h.next.ServeHTTP(w, r)