diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/30.n3/20.overview/cheatsheet.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/30.n3/20.overview/cheatsheet.fr.md
index bb904f82d..48cbd8263 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/30.n3/20.overview/cheatsheet.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/30.n3/20.overview/cheatsheet.fr.md
@@ -8,4 +8,6 @@ lessons:
       order: 1
 ---
 
-Les relativités niveau 3, overview
\ No newline at end of file
+#### Mécaniques relativistes, n3, synthèse
+
+--------------------------------------
\ No newline at end of file