diff --git a/src/lib.rs b/src/lib.rs
index 7564a98..6206c52 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -83,7 +83,7 @@ pub fn give_up<T: 'static>() -> Box<T> {
 	let mut rng = oorandom::Rand32::new(seed());
 
 	for _ in 0..size {
-		v.push((rng.rand_u32() % 256) as u8);
+		v.push((rng.rand_u32() & u32::from(u8::MAX)) as u8);
 	}
 
 	crate::transmute(v.into_boxed_slice())