diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index 2b651de3c1..9f9668c2b4 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -372,7 +372,6 @@ static void q800_machine_init(MachineState *machine)
     int bios_size;
     ram_addr_t initrd_base;
     int32_t initrd_size;
-    MemoryRegion *rom;
     MemoryRegion *io;
     MemoryRegion *dp8393x_prom = g_new(MemoryRegion, 1);
     uint8_t *prom;
@@ -646,11 +645,10 @@ static void q800_machine_init(MachineState *machine)
         BOOTINFO1(param_ptr, BI_MAC_VROW, macfb_mode->stride);
         BOOTINFO1(param_ptr, BI_MAC_SCCBASE, SCC_BASE);
 
-        rom = g_malloc(sizeof(*rom));
-        memory_region_init_ram_ptr(rom, NULL, "m68k_fake_mac.rom",
+        memory_region_init_ram_ptr(&m->rom, NULL, "m68k_fake_mac.rom",
                                    sizeof(fake_mac_rom), fake_mac_rom);
-        memory_region_set_readonly(rom, true);
-        memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom);
+        memory_region_set_readonly(&m->rom, true);
+        memory_region_add_subregion(get_system_memory(), MACROM_ADDR, &m->rom);
 
         if (kernel_cmdline) {
             BOOTINFOSTR(param_ptr, BI_COMMAND_LINE,
@@ -692,11 +690,10 @@ static void q800_machine_init(MachineState *machine)
     } else {
         uint8_t *ptr;
         /* allocate and load BIOS */
-        rom = g_malloc(sizeof(*rom));
-        memory_region_init_rom(rom, NULL, "m68k_mac.rom", MACROM_SIZE,
+        memory_region_init_rom(&m->rom, NULL, "m68k_mac.rom", MACROM_SIZE,
                                &error_abort);
         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
-        memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom);
+        memory_region_add_subregion(get_system_memory(), MACROM_ADDR, &m->rom);
 
         /* Load MacROM binary */
         if (filename) {
diff --git a/include/hw/m68k/q800.h b/include/hw/m68k/q800.h
index 4cb1a51dfe..d1f1ae4b88 100644
--- a/include/hw/m68k/q800.h
+++ b/include/hw/m68k/q800.h
@@ -26,6 +26,7 @@
 #include "hw/boards.h"
 #include "qom/object.h"
 #include "target/m68k/cpu-qom.h"
+#include "exec/memory.h"
 
 /*
  * The main Q800 machine
@@ -35,6 +36,7 @@ struct Q800MachineState {
     MachineState parent_obj;
 
     M68kCPU cpu;
+    MemoryRegion rom;
 };
 
 #define TYPE_Q800_MACHINE MACHINE_TYPE_NAME("q800")