diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.en.md
index 02af3108c..ba2c2690c 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.en.md
@@ -1,7 +1,7 @@
 ---
 title: Brainstorming to structure a theme "Electromagnetism"
 published: true
-routable: false
+routable: true
 visible: false
 lessons:
     - slug: brainstorming-n1234-electromagnetism