diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/10.brainstorming/testbook.en.fr b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/10.brainstorming/testbook.en.fr
index cd667ad90..96ad83afc 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/10.brainstorming/testbook.en.fr
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/10.brainstorming/testbook.en.fr
@@ -7,7 +7,7 @@ lessons:
     - slug: brainstorming-123-classical-mechanics
       order: 3
     - slug: brainstorming-234-classical-mechanics
-      order: 2
+      order: 1
 ---
 
 #### Brainstorming to structure a theme "Classical mechanics" : level 3