diff --git a/slides/cours_11.md b/slides/cours_11.md
index 322f83255718da3edec348877c98764bccaa89da..a59430ab56c1ac36cf9b2a9e943ac39d6d56c941 100644
--- a/slides/cours_11.md
+++ b/slides/cours_11.md
@@ -221,7 +221,6 @@ void stack_pop(stack *s, int *val) {
     element *tmp = *s;
     *s = (*s)->next;
     free(tmp);
-    return val;
 }
 ```