diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/10.main/textbook.fr.md
index b34361d53..ee0d1c77b 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/10.main/textbook.fr.md
@@ -14,6 +14,6 @@ lessons:
       order: 2
 ---
 
-### Mécanique classique, n3, principal
+#### Mécanique classique, n3, principal
 
 ------------------------------------------------
\ No newline at end of file