diff --git a/vstte10competition/SumAndMax.scala b/vstte10competition/SumAndMax.scala
index 2410dff5d428a0ef9c12687d0f8ec023a8f682a4..973eb3cf7738cab8cd98df77fb81d7be0525b9f1 100644
--- a/vstte10competition/SumAndMax.scala
+++ b/vstte10competition/SumAndMax.scala
@@ -40,7 +40,8 @@ object SumAndMax {
 
   @induct
   def property(list : List) : Boolean = {
-    require(allPos(list))
+    // This precondition was given in the problem but isn't actually useful :D
+    // require(allPos(list))
     sum(list) <= size(list) * (if(list == Nil()) 0 else max(list))
   } holds
 }