diff --git a/day11/src/main.rs b/day11/src/main.rs
index 92d05bc..c953d1e 100644
--- a/day11/src/main.rs
+++ b/day11/src/main.rs
@@ -361,10 +361,10 @@ Monkey 3:
         lines.next();
         monkeys.push(monkey);
     }
-    let min_product: BigInt = monkeys
+    let min_product: Item = monkeys
         .iter()
         .map(|monkey| monkey.test_divisible_by.clone())
-        .fold(1.into(), |p, i| p * i);
+        .fold(1u64.into(), |p, i| p * i);
     let mut monkeys2 = monkeys.clone();
 
     for _ in 0..20 {