diff --git a/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.fr.md b/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.fr.md
index 42cb79f21..ade8538d1 100644
--- a/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.fr.md
+++ b/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.fr.md
@@ -3,11 +3,13 @@ title: Démonstration du théorème de Gauss
 published: true
 routable: false
 visible: false
+
+---
+<!--
 lessons:
     - slug: gauss-ampere-theorems-demonstration
       order: 1
----
-
+      -->
 
 <!--caligraphie de l'intégrale double curviligne-->
 $`\def\oiint{\displaystyle\mathop{{\iint}\mkern-18mu \scriptsize \bigcirc}}`$