diff --git a/weed/command/filer.go b/weed/command/filer.go
index dcb7be36b..77e312646 100644
--- a/weed/command/filer.go
+++ b/weed/command/filer.go
@@ -130,6 +130,7 @@ func init() {
 	filerWebDavOptions.tlsCertificate = cmdFiler.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	filerWebDavOptions.cacheDir = cmdFiler.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
 	filerWebDavOptions.cacheSizeMB = cmdFiler.Flag.Int64("webdav.cacheCapacityMB", 0, "local cache capacity in MB")
+	filerWebDavOptions.maxMB = cmdFiler.Flag.Int("webdav.maxMB", 4, "split files larger than the limit")
 	filerWebDavOptions.filerRootPath = cmdFiler.Flag.String("webdav.filer.path", "/", "use this remote path from filer server")
 
 	// start iam on filer