diff --git a/hw/cr16c/virt.c b/hw/cr16c/virt.c
index 1a05ba0956..cc52786970 100644
--- a/hw/cr16c/virt.c
+++ b/hw/cr16c/virt.c
@@ -32,7 +32,7 @@ static void virt_init(MachineState* machine)
     memory_region_init_ram(&m_state->flash, NULL, "flash", 16*MiB - 64*KiB, &error_fatal);
     memory_region_add_subregion(get_system_memory(), 0, &m_state->flash);
 
-    create_unimplemented_device("mmio", 0xFF0000, 0xFFBFFF - 0xFF0000);
+    create_unimplemented_device("mmio", 0xFF0000, 0xFFFBFF - 0xFF0000);
     //memory_region_init_alias(&m_state->mmio_alias, NULL, "mmio_alias", &m_state->flash, 0xF0000, 0xFFFFF - 0xF0000);
 
     create_unimplemented_device("icu", 0xFFFC00, 0xFFFFFF - 0xFFFC00); // interrupt controller unit