diff --git a/hw/alpha/typhoon.c b/hw/alpha/typhoon.c
index d3ed7cdbe8..d74b5b55e1 100644
--- a/hw/alpha/typhoon.c
+++ b/hw/alpha/typhoon.c
@@ -7,6 +7,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "qapi/error.h"
 #include "cpu.h"
 #include "hw/hw.h"
@@ -813,8 +814,6 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
                      qemu_irq *p_rtc_irq,
                      AlphaCPU *cpus[4], pci_map_irq_fn sys_map_irq)
 {
-    const uint64_t MB = 1024 * 1024;
-    const uint64_t GB = 1024 * MB;
     MemoryRegion *addr_space = get_system_memory();
     DeviceState *dev;
     TyphoonState *s;
@@ -855,30 +854,30 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
 
     /* Pchip0 CSRs, 0x801.8000.0000, 256MB.  */
     memory_region_init_io(&s->pchip.region, OBJECT(s), &pchip_ops, s, "pchip0",
-                          256*MB);
+                          256 * MiB);
     memory_region_add_subregion(addr_space, 0x80180000000ULL,
                                 &s->pchip.region);
 
     /* Cchip CSRs, 0x801.A000.0000, 256MB.  */
     memory_region_init_io(&s->cchip.region, OBJECT(s), &cchip_ops, s, "cchip0",
-                          256*MB);
+                          256 * MiB);
     memory_region_add_subregion(addr_space, 0x801a0000000ULL,
                                 &s->cchip.region);
 
     /* Dchip CSRs, 0x801.B000.0000, 256MB.  */
     memory_region_init_io(&s->dchip_region, OBJECT(s), &dchip_ops, s, "dchip0",
-                          256*MB);
+                          256 * MiB);
     memory_region_add_subregion(addr_space, 0x801b0000000ULL,
                                 &s->dchip_region);
 
     /* Pchip0 PCI memory, 0x800.0000.0000, 4GB.  */
-    memory_region_init(&s->pchip.reg_mem, OBJECT(s), "pci0-mem", 4*GB);
+    memory_region_init(&s->pchip.reg_mem, OBJECT(s), "pci0-mem", 4 * GiB);
     memory_region_add_subregion(addr_space, 0x80000000000ULL,
                                 &s->pchip.reg_mem);
 
     /* Pchip0 PCI I/O, 0x801.FC00.0000, 32MB.  */
     memory_region_init_io(&s->pchip.reg_io, OBJECT(s), &alpha_pci_ignore_ops,
-                          NULL, "pci0-io", 32*MB);
+                          NULL, "pci0-io", 32 * MiB);
     memory_region_add_subregion(addr_space, 0x801fc000000ULL,
                                 &s->pchip.reg_io);
 
@@ -899,13 +898,13 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
 
     /* Pchip0 PCI special/interrupt acknowledge, 0x801.F800.0000, 64MB.  */
     memory_region_init_io(&s->pchip.reg_iack, OBJECT(s), &alpha_pci_iack_ops,
-                          b, "pci0-iack", 64*MB);
+                          b, "pci0-iack", 64 * MiB);
     memory_region_add_subregion(addr_space, 0x801f8000000ULL,
                                 &s->pchip.reg_iack);
 
     /* Pchip0 PCI configuration, 0x801.FE00.0000, 16MB.  */
     memory_region_init_io(&s->pchip.reg_conf, OBJECT(s), &alpha_pci_conf1_ops,
-                          b, "pci0-conf", 16*MB);
+                          b, "pci0-conf", 16 * MiB);
     memory_region_add_subregion(addr_space, 0x801fe000000ULL,
                                 &s->pchip.reg_conf);