diff --git a/01.curriculum/01.physics-chemistry-biology/01.niv1/default.en.md b/01.curriculum/01.physics-chemistry-biology/01.niv1/default.en.md
index 20f0b22bf..92821f531 100644
--- a/01.curriculum/01.physics-chemistry-biology/01.niv1/default.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/01.niv1/default.en.md
@@ -1,6 +1,7 @@
 ---
 title: ' plains'
 published: true
-visible: true
+routable: false
+visible: false
 ---