diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.fr.md
index a3b38aef9..3d33ceaf4 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.fr.md
@@ -3,9 +3,12 @@ title: Brainstorming pour structurer une thème "Electromagnétisme"
 published: true
 routable: true
 visible: false
+lessons:
 lessons:
     - slug: brainstorming-123-electromagnetism
       order: 1
+    - slug: brainstorming-234-electromagnetism
+      order: 4
 ---
 
 #### Brainstorming pour structurer un thème "Electromagnétisme" : niveau 1