diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/30.n2/20.fr/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/30.n2/20.fr/10.main/textbook.fr.md
index 4e137329e..903e1800d 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/30.n2/20.fr/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/30.n2/20.fr/10.main/textbook.fr.md
@@ -9,7 +9,7 @@ lessons:
     - slug: mecanique-classique-123-panorama
       order: 2
     - slug: mecanique-classique-234-panorama
-      order: 2
+      order: 1
     - slug: classical-mechanics-n2-exchange
       order: 2
 ---