diff --git a/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/10.main/textbook.en.md b/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/10.main/textbook.en.md
index 7c9dc253a..7d3baf91b 100644
--- a/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/10.main/textbook.en.md
+++ b/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/10.main/textbook.en.md
@@ -1,6 +1,6 @@
 ---
 title: Cartesian coordinates
-published: true
+published: false
 routable: false
 visible: false
 lessons: