diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md
index bfbe7fdab..b9d1c0d72 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md
@@ -4,7 +4,7 @@ published: true
 routable: true
 visible: false
 lessons:
-    - slug: definir-234-herramienta-matematica
+    - slug: define-234-mathematical-tools
       order: 3
 ---