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 64db2703b..02af3108c 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
@@ -4,7 +4,7 @@ published: true
 routable: false
 visible: false
 lessons:
-    - slug: brainstormming-n1234-electromagnetism
+    - slug: brainstorming-n1234-electromagnetism
       order: 1
 ---