diff --git a/qemu/saimaa.c b/qemu/saimaa.c
index 87cb428..8692e15 100644
--- a/qemu/saimaa.c
+++ b/qemu/saimaa.c
@@ -4,6 +4,7 @@
  * Most peripherals are trace-stubs; UART prints to stdio.
  */
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "qapi/error.h"
 #include "hw/arm/boot.h"
 #include "hw/boards.h"