diff --git a/node/node.go b/node/node.go
index f9ebb243b0..01318881d4 100644
--- a/node/node.go
+++ b/node/node.go
@@ -152,8 +152,10 @@ func New(conf *Config) (*Node, error) {
 	// Configure RPC servers.
 	node.http = newHTTPServer(node.log, conf.HTTPTimeouts)
 	node.httpAuth = newHTTPServer(node.log, conf.HTTPTimeouts)
+	node.httpAuth.disableHTTP2 = true // Engine API does not need HTTP/2
 	node.ws = newHTTPServer(node.log, rpc.DefaultHTTPTimeouts)
 	node.wsAuth = newHTTPServer(node.log, rpc.DefaultHTTPTimeouts)
+	node.wsAuth.disableHTTP2 = true
 	node.ipc = newIPCServer(node.log, conf.IPCEndpoint())
 
 	return node, nil
diff --git a/node/rpcstack.go b/node/rpcstack.go
index a9ac88e4de..20d488b734 100644
--- a/node/rpcstack.go
+++ b/node/rpcstack.go
@@ -90,6 +90,9 @@ type httpServer struct {
 	port     int
 
 	handlerNames map[string]string
+
+	// disableHTTP2 disables HTTP/2 support on this server when set to true.
+	disableHTTP2 bool
 }
 
 const (
@@ -140,7 +143,9 @@ func (h *httpServer) start() error {
 	h.server = &http.Server{Handler: h}
 	h.server.Protocols = new(http.Protocols)
 	h.server.Protocols.SetHTTP1(true)
-	h.server.Protocols.SetUnencryptedHTTP2(true)
+	if !h.disableHTTP2 {
+		h.server.Protocols.SetUnencryptedHTTP2(true)
+	}
 	if h.timeouts != (rpc.HTTPTimeouts{}) {
 		CheckTimeouts(&h.timeouts)
 		h.server.ReadTimeout = h.timeouts.ReadTimeout