diff --git a/session/filesync/filesync.go b/session/filesync/filesync.go
index a51b490857f1..05e089340a9f 100644
--- a/session/filesync/filesync.go
+++ b/session/filesync/filesync.go
@@ -277,7 +277,7 @@ func (sp *fsSyncTarget) DiffCopy(stream FileSend_DiffCopyServer) (err error) {
 	}
 	defer func() {
 		err1 := wc.Close()
-		if err != nil {
+		if err == nil {
 			err = err1
 		}
 	}()