diff --git a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/04.fermat-principle/02.fermat-principle-overview/textbook.es.md b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/04.fermat-principle/02.fermat-principle-overview/textbook.es.md
index 88e43359c..aa7fdda99 100644
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/04.fermat-principle/02.fermat-principle-overview/textbook.es.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/04.fermat-principle/02.fermat-principle-overview/textbook.es.md
@@ -1,4 +1,6 @@
 ---
 title: 'El principio de Fermat T'
+published: false
+visible: false
 ---