diff --git a/README.md b/README.md
index 6fa52b618..61195c016 100755
--- a/README.md
+++ b/README.md
@@ -139,9 +139,9 @@ c.ContentsManager.default_notebook_metadata_filter = "-all"
 c.ContentsManager.default_cell_metadata_filter = "-all"
 ```
 
-Finally, if you want Jupytext to preserve metadata in pre-existing scripts or markdowns files, use:
+Finally, if you want that Jupytext exports no other metadata that the one already present in pre-existing scripts or markdowns files, use:
 ```python
-# Do not modify metadata when editing a markdown document or a script
+# Do not add new metadata when editing a markdown document or a script
 c.ContentsManager.freeze_metadata = True
 ```