diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/01.time-space-corpsuscules-waves/topic.en.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/01.time-space-corpsuscules-waves/topic.en.md
index de635ad8c..d595054de 100644
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/01.time-space-corpsuscules-waves/topic.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/01.time-space-corpsuscules-waves/topic.en.md
@@ -1,4 +1,6 @@
 ---
 title: 'Time and space, corpuscles and waves'
+published: false
+visible: false
 ---