diff --git a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/02.spherical-refracting-surface/07.spherical-refracting-surface-level-up/page.en.md b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/02.spherical-refracting-surface/07.spherical-refracting-surface-level-up/page.en.md
deleted file mode 100644
index c0d4f2c1e..000000000
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/02.spherical-refracting-surface/07.spherical-refracting-surface-level-up/page.en.md
+++ /dev/null
@@ -1,17 +0,0 @@
----
-title: 'Plane refracting surface (previous level)'
-published: false
-visible: false
----
-
-course : level+1
-
-\- or level+2 if current level=1
-\-or level-1 if current level=4
-
-#####for parallel or other level course :
-It will be possible to redirect towards an other page in the m3p2 cursus.
-Or to write here some paragraphes separated by html from an other pages, I think.
-Or write here a completely new parallel course
-
-For the moment, please wait.
\ No newline at end of file