diff --git a/slides/cours_17.md b/slides/cours_17.md
index f90dac01b4c7b88ea8d592aa5008c4953358fc4c..fb4f1db96ecad75361f38d9d8821c78219fad39d 100644
--- a/slides/cours_17.md
+++ b/slides/cours_17.md
@@ -1263,3 +1263,5 @@ graph TD;
 ::::
 
 :::
+
+**Déséquilibre!** Que vaut `fe`?