diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.es.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.es.md
index 0d4f16f88..819fa5c08 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.es.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n1/textbook.es.md
@@ -4,7 +4,7 @@ published: true
 routable: true
 visible: false
 lessons:
-    - slug: brainstorming-n1234-electromagnetism
+    - slug: brainstorming-123-electromagnetism
       order: 1
 ---