diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n2/10.brainstorming/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n2/10.brainstorming/textbook.fr.md
index 66928238c..a50b1b2c5 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n2/10.brainstorming/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n2/10.brainstorming/textbook.fr.md
@@ -7,7 +7,7 @@ lessons:
     - slug: brainstorming-123-classical-mechanics
       order: 2
     - slug: brainstorming-234-classical-mechanics
-      order: 2
+      order: 1
 ---
 
 #### Brainstorming pour structurer un thème "Classical mechanics" : niveau 2