diff --git a/slides/examen.md b/slides/examen.md
index 3c65a2a804f8dca52092b5cce4a9d0a653cdd2fe..a394ee5a7eb025bdca7c11a92d1a4cb4b696b5c2 100644
--- a/slides/examen.md
+++ b/slides/examen.md
@@ -86,7 +86,7 @@ sur une nouvelle ligne suivi de CHF.
 ## Exemple
 
 ```bash
-$ ./prog 12.2 45.5 1.5 65.1 89.4 567.6 112.8 67.0 35.1 112.2 3.3 9.8
+$ ./prog 12 12.2 45.5 1.5 65.1 89.4 567.6 112.8 67.0 35.1 112.2 3.3 9.8
 
 2243.000000 CHF
 ```