diff --git a/rust/hw/timer/hpet/src/device.rs b/rust/hw/timer/hpet/src/device.rs
index 3cfbe9c32b..fce7541557 100644
--- a/rust/hw/timer/hpet/src/device.rs
+++ b/rust/hw/timer/hpet/src/device.rs
@@ -909,7 +909,7 @@ declare_properties! {
         HPETState,
         num_timers,
         unsafe { &qdev_prop_usize },
-        u8,
+        usize,
         default = HPET_MIN_TIMERS
     ),
     define_property!(