diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index dd763974c..6750617db 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -47,7 +47,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.maxMB = cmdCopy.Flag.Int("maxMB", 0, "split files larger than the limit")
+	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.filerGrpcPort = cmdCopy.Flag.Int("filer.port.grpc", 0, "filer grpc server listen port, default to filer port + 10000")
 }
 
diff --git a/weed/command/upload.go b/weed/command/upload.go
index 80fc635c1..1271725ba 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -37,7 +37,7 @@ func init() {
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	upload.maxMB = cmdUpload.Flag.Int("maxMB", 0, "split files larger than the limit")
+	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 }
 
 var cmdUpload = &Command{