diff --git a/hw/mips/mips_r4k.c b/hw/mips/mips_r4k.c
index b2aec434c3..258cd91578 100644
--- a/hw/mips/mips_r4k.c
+++ b/hw/mips/mips_r4k.c
@@ -171,13 +171,11 @@ static const int sector_len = 32 * KiB;
 static
 void mips_r4k_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
     char *filename;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios;
     MemoryRegion *iomem = g_new(MemoryRegion, 1);
     MemoryRegion *isa_io = g_new(MemoryRegion, 1);
@@ -203,14 +201,12 @@ void mips_r4k_init(MachineState *machine)
     qemu_register_reset(main_cpu_reset, reset_info);
 
     /* allocate RAM */
-    if (ram_size > 256 * MiB) {
+    if (machine->ram_size > 256 * MiB) {
         error_report("Too much memory for this machine: %" PRId64 "MB,"
                      " maximum 256MB", ram_size / MiB);
         exit(1);
     }
-    memory_region_allocate_system_memory(ram, NULL, "mips_r4k.ram", ram_size);
-
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     memory_region_init_io(iomem, NULL, &mips_qemu_ops,
                           NULL, "mips-qemu", 0x10000);
@@ -261,7 +257,7 @@ void mips_r4k_init(MachineState *machine)
     g_free(filename);
 
     if (kernel_filename) {
-        loaderparams.ram_size = ram_size;
+        loaderparams.ram_size = machine->ram_size;
         loaderparams.kernel_filename = kernel_filename;
         loaderparams.kernel_cmdline = kernel_cmdline;
         loaderparams.initrd_filename = initrd_filename;
@@ -316,7 +312,7 @@ static void mips_machine_init(MachineClass *mc)
 #else
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf");
 #endif
-
+    mc->default_ram_id = "mips_r4k.ram";
 }
 
 DEFINE_MACHINE("mips", mips_machine_init)