diff --git a/TipsFirefox.md b/TipsFirefox.md
index 6711356a..7f71b8f6 100644
--- a/TipsFirefox.md
+++ b/TipsFirefox.md
@@ -134,3 +134,4 @@ $ sqlite3 favicons.sqlite
 sqlite> vacuum;
 ~~~
 
+Voir <https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Storage/Performance>