diff --git a/qemu/saimaa.c b/qemu/saimaa.c
index c7a9e1e..7674aab 100644
--- a/qemu/saimaa.c
+++ b/qemu/saimaa.c
@@ -267,7 +267,7 @@ static void saimaa_machine_init(MachineState *machine)
         { "saimaa.mystrom", SAIMAA_MYSTROM_BASE, SAIMAA_MYSTROM_SIZE },
         { "saimaa.smem", SAIMAA_SMEM_BASE, SAIMAA_SMEM_SIZE },
     };
-    for (i = 0; i < 11; i++) {
+    for (i = 0; i < ARRAY_SIZE(rams); i++) {
         MemoryRegion *ram = g_new(MemoryRegion, 1);
         memory_region_init_ram(ram, NULL, rams[i].n, rams[i].s,
                                &error_fatal);