diff --git a/rust/qemu-api/src/timer.rs b/rust/qemu-api/src/timer.rs
index f0b04ef95d..e769f8bc91 100644
--- a/rust/qemu-api/src/timer.rs
+++ b/rust/qemu-api/src/timer.rs
@@ -121,3 +121,5 @@ pub fn get_ns(&self) -> u64 {
 pub const CLOCK_VIRTUAL: ClockType = ClockType {
     id: QEMUClockType::QEMU_CLOCK_VIRTUAL,
 };
+
+pub const NANOSECONDS_PER_SECOND: u64 = 1000000000;