diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n3/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n3/textbook.en.md
index a4b34e12d..eefe6ae6b 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n3/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n3/textbook.en.md
@@ -4,8 +4,10 @@ published: true
 routable: true
 visible: false
 lessons:
-    - slug: brainstorming-n1234-electromagnetism
+    - slug: brainstorming-123-electromagnetism
       order: 3
+    - slug: brainstorming-234-electromagnetism
+      order: 2
 ---
 
 #### Brainstorming to structure a theme "Electromagnetism" : level 3