diff --git a/weed/command/server.go b/weed/command/server.go
index 5d480070b..52a30b3d1 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -152,6 +152,8 @@ func init() {
 	serverOptions.v.inflightUploadDataTimeout = cmdServer.Flag.Duration("volume.inflightUploadDataTimeout", 60*time.Second, "inflight upload data wait timeout of volume servers")
 	serverOptions.v.inflightDownloadDataTimeout = cmdServer.Flag.Duration("volume.inflightDownloadDataTimeout", 60*time.Second, "inflight download data wait timeout of volume servers")
 
+	serverOptions.v.udsListen = cmdServer.Flag.String("volume.uds.listen", "", "Unix domain socket path for RDMA sidecar locate API (e.g., /tmp/sra-volume.sock)")
+
 	serverOptions.v.hasSlowRead = cmdServer.Flag.Bool("volume.hasSlowRead", true, "<experimental> if true, this prevents slow reads from blocking other requests, but large file read P99 latency will increase.")
 	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")