diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 1b0a0a8ba3..f47b15f10e 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -149,7 +149,7 @@ static void ref405ep_init(MachineState *machine)
     MemoryRegion *bios;
     MemoryRegion *sram = g_new(MemoryRegion, 1);
     ram_addr_t bdloc;
-    MemoryRegion *ram_memories = g_malloc(2 * sizeof(*ram_memories));
+    MemoryRegion *ram_memories = g_new(MemoryRegion, 2);
     hwaddr ram_bases[2], ram_sizes[2];
     target_ulong sram_size;
     long bios_size;
@@ -448,7 +448,7 @@ static void taihu_405ep_init(MachineState *machine)
     qemu_irq *pic;
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *bios;
-    MemoryRegion *ram_memories = g_malloc(2 * sizeof(*ram_memories));
+    MemoryRegion *ram_memories = g_new(MemoryRegion, 2);
     MemoryRegion *ram = g_malloc0(sizeof(*ram));
     hwaddr ram_bases[2], ram_sizes[2];
     long bios_size;