diff --git a/src/praetor/mod.rs b/src/praetor/mod.rs
index 44a9dc4..b470231 100644
--- a/src/praetor/mod.rs
+++ b/src/praetor/mod.rs
@@ -188,6 +188,7 @@ mod job {
     use super::util::TaggedAtomicPtr;
 
     #[derive(Debug)]
+    #[repr(transparent)]
     pub struct SmallBox<T>(pub MaybeUninit<Box<T>>);
 
     impl<T: Display> Display for SmallBox<T> {