diff --git a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/03.reflexion-refraction-raytracing/topic.en.md b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/03.reflexion-refraction-raytracing/topic.en.md
index b4583f0e6..67ef95f82 100644
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/03.reflexion-refraction-raytracing/topic.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/03.reflexion-refraction-raytracing/topic.en.md
@@ -1,5 +1,7 @@
 ---
 title: 'Reflexion and refraction laws, and Ray tracing'
+published: true
+visible: false
 ---
 
 A mon avis, mais partagé?