diff --git a/weed/command/server.go b/weed/command/server.go
index 249afdf10..fecb1cad6 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -139,6 +139,7 @@ func init() {
 	serverOptions.v.readBufferSizeMB = cmdServer.Flag.Int("volume.readBufferSizeMB", 4, "<experimental> larger values can optimize query performance but will increase some memory usage,Use with hasSlowRead normally")
 
 	s3Options.port = cmdServer.Flag.Int("s3.port", 8333, "s3 server http listen port")
+	s3Options.portHttps = cmdServer.Flag.Int("s3.port.https", 0, "s3 server https listen port")
 	s3Options.portGrpc = cmdServer.Flag.Int("s3.port.grpc", 0, "s3 server grpc listen port")
 	s3Options.domainName = cmdServer.Flag.String("s3.domainName", "", "suffix of the host name in comma separated list, {bucket}.{domainName}")
 	s3Options.tlsPrivateKey = cmdServer.Flag.String("s3.key.file", "", "path to the TLS private key file")