diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md
index 60ad885e7..2d7e99ec0 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md
@@ -4,7 +4,7 @@ published: true
 routable: false
 visible: false
 lessons:
-    - slug: brainstormming-n1234-electromagnetism
+    - slug: brainstorming-n1234-electromagnetism
       order: 4
 ---