diff --git a/waterbox/waterboxhost/src/memory_block/tests.rs b/waterbox/waterboxhost/src/memory_block/tests.rs
index c1f34a1311..e8176a4a22 100644
--- a/waterbox/waterboxhost/src/memory_block/tests.rs
+++ b/waterbox/waterboxhost/src/memory_block/tests.rs
@@ -1,5 +1,6 @@
 #![cfg(test)]
 
+use core::arch::asm;
 use std::mem::transmute;
 use super::*;