diff --git a/dm5/lib/lib.ml b/dm5/lib/lib.ml
index b75db38..5eacdf5 100644
--- a/dm5/lib/lib.ml
+++ b/dm5/lib/lib.ml
@@ -14,10 +14,10 @@ let quarante_deux t =
   let i = ref 0 in
   while !i < n do
     if t.(!i) mod 42 = 0 then
-      count := !count + 1
-    else ()
+      count := !count + 1;
+    i := !i + 42
   done;
-  !count
+  !count = 42
 ;;
 
 (* Exercice 3 *)