diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/40.electromagnetism/05.first-steps/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/40.electromagnetism/05.first-steps/textbook.en.md
index 95966dc97..0eea8d5d6 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/40.electromagnetism/05.first-steps/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/40.electromagnetism/05.first-steps/textbook.en.md
@@ -5,7 +5,7 @@ routable: true
 visible: false
 lessons:
 lessons:
-    - slug: brainstorming-g12-classical-mechanics
+    - slug: brainstorming-g12-electromagnetism
       order: 1
 ---