diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c
index 8a988c1676..ff154eb84f 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -1151,14 +1151,17 @@ static void aspeed_smc_realize(DeviceState *dev, Error **errp)
      * window in which the flash modules are mapped. The size and
      * address depends on the SoC model and controller type.
      */
+    memory_region_init(&s->mmio_flash_container, OBJECT(s),
+                       TYPE_ASPEED_SMC ".container",
+                       asc->flash_window_size);
+    sysbus_init_mmio(sbd, &s->mmio_flash_container);
+
     memory_region_init_io(&s->mmio_flash, OBJECT(s),
                           &aspeed_smc_flash_default_ops, s,
                           TYPE_ASPEED_SMC ".flash",
                           asc->flash_window_size);
-    memory_region_init_alias(&s->mmio_flash_alias, OBJECT(s),
-                             TYPE_ASPEED_SMC ".flash",
-                             &s->mmio_flash, 0, asc->flash_window_size);
-    sysbus_init_mmio(sbd, &s->mmio_flash_alias);
+    memory_region_add_subregion(&s->mmio_flash_container, 0x0,
+                                &s->mmio_flash);
 
     /*
      * Let's create a sub memory region for each possible peripheral. All
diff --git a/include/hw/ssi/aspeed_smc.h b/include/hw/ssi/aspeed_smc.h
index 75bc793bd2..e265555819 100644
--- a/include/hw/ssi/aspeed_smc.h
+++ b/include/hw/ssi/aspeed_smc.h
@@ -52,8 +52,8 @@ struct AspeedSMCState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
+    MemoryRegion mmio_flash_container;
     MemoryRegion mmio_flash;
-    MemoryRegion mmio_flash_alias;
 
     qemu_irq irq;