diff --git a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/03.reflexion-refraction/01.reflexion-refraction-main/textbook.en.md b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/03.reflexion-refraction/01.reflexion-refraction-main/textbook.en.md
index 999d8c29c..1c77a1f57 100644
--- a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/03.reflexion-refraction/01.reflexion-refraction-main/textbook.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/03.reflexion-refraction/01.reflexion-refraction-main/textbook.en.md
@@ -1,7 +1,7 @@
 ---
 title : en construction
 published :true
-visible : false
+visible : true
 ---
 
 [en construction] (direct depuis local)