diff --git a/README.md b/README.md
index 8f7a95271ae307bd0773ebe7a0ec6e68f5b5ef4c..f81253407351422c01e13050341dabe882d13ffd 100644
--- a/README.md
+++ b/README.md
@@ -79,8 +79,12 @@ i18n
 |- <lang_code>
   |- html_translations.json (translation strings for HTML files)
   |- strings.js (error messages)
-  |- logo_g.png (translated logo, size 900x900)
+  |- logo_g.png (translated logo, size 900x900px)
+  |- example_vignette.png (example vignette, size 850x607px) 
 ```
-The name of the lang dir (FR, CAT, etc) is used in the interface, please do not use fuzzy dir names.
+Note that example_vignette.png is optional and is not included in Git tree to avoid useless weight.
+If you create a translated example_vignette.png, please notify it in the MR and send it to Matograine.
+
+The name of the lang dir (FR, CA, etc) is used in the interface, please do not use fuzzy dir names.
 
 You may delete a translation dir before launching the build if you don't want to use it.