diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index 5af76f0..995b2d5 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -29,8 +29,6 @@
 #include "qemu-common.h"
 #include "qemu/timer.h"
 
-#define NANOSECONDS_PER_SECOND  1000000000.0
-
 typedef enum {
     THROTTLE_BPS_TOTAL,
     THROTTLE_BPS_READ,
diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 9e4f90f..5923d60 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -5,6 +5,8 @@
 #include "qemu-common.h"
 #include "qemu/notify.h"
 
+#define NANOSECONDS_PER_SECOND 1000000000LL
+
 /* timers */
 
 #define SCALE_MS 1000000