diff --git a/rust/kernel/usb.rs b/rust/kernel/usb.rs
index 88721970afcb..6c917d8fa883 100644
--- a/rust/kernel/usb.rs
+++ b/rust/kernel/usb.rs
@@ -468,6 +468,10 @@ unsafe impl Send for Device {}
 // allow any mutation through a shared reference.
 unsafe impl Sync for Device {}
 
+// SAFETY: Same as `Device<Normal>` -- the underlying `struct usb_device` is the same;
+// `Bound` is a zero-sized type-state marker that does not affect thread safety.
+unsafe impl Sync for Device<device::Bound> {}
+
 /// Declares a kernel module that exposes a single USB driver.
 ///
 /// # Examples