diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 88ae55e84..185a1d0ff 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -482,7 +482,8 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 				})
 			})
 			if err != nil {
-				fmt.Printf("Failed to assign from %v: %v\n", worker.options.masters, err)
+				uploadError = fmt.Errorf("Failed to assign from %v: %v\n", worker.options.masters, err)
+				return
 			}
 
 			targetUrl := "http://" + assignResult.Location.Url + "/" + assignResult.FileId