diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md
index ee2181273..b090bdbf5 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md
@@ -10,5 +10,5 @@ lessons:
       order: 3
 ---
 
-Les relativités niveau 4, main
+#### Mécaniques relativistes, n4, main