diff --git a/hw/arm/gumstix.c b/hw/arm/gumstix.c
index 3a4bc332c4..c167518a46 100644
--- a/hw/arm/gumstix.c
+++ b/hw/arm/gumstix.c
@@ -51,12 +51,11 @@ static void connex_init(MachineState *machine)
 {
     PXA2xxState *cpu;
     DriveInfo *dinfo;
-    MemoryRegion *address_space_mem = get_system_memory();
 
     uint32_t connex_rom = 0x01000000;
     uint32_t connex_ram = 0x04000000;
 
-    cpu = pxa255_init(address_space_mem, connex_ram);
+    cpu = pxa255_init(connex_ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     if (!dinfo && !qtest_enabled()) {
diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index 93dda83d7a..8b8845fc63 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -11,6 +11,7 @@
 #include "qemu/error-report.h"
 #include "qemu/module.h"
 #include "qapi/error.h"
+#include "exec/address-spaces.h"
 #include "cpu.h"
 #include "hw/sysbus.h"
 #include "migration/vmstate.h"
@@ -2230,8 +2231,9 @@ PXA2xxState *pxa270_init(MemoryRegion *address_space,
 }
 
 /* Initialise a PXA255 integrated chip (ARM based core).  */
-PXA2xxState *pxa255_init(MemoryRegion *address_space, unsigned int sdram_size)
+PXA2xxState *pxa255_init(unsigned int sdram_size)
 {
+    MemoryRegion *address_space = get_system_memory();
     PXA2xxState *s;
     int i;
     DriveInfo *dinfo;
diff --git a/hw/arm/tosa.c b/hw/arm/tosa.c
index d5a6763cf9..3ca2e4459c 100644
--- a/hw/arm/tosa.c
+++ b/hw/arm/tosa.c
@@ -242,7 +242,7 @@ static void tosa_init(MachineState *machine)
     TC6393xbState *tmio;
     DeviceState *scp0, *scp1;
 
-    mpu = pxa255_init(address_space_mem, tosa_binfo.ram_size);
+    mpu = pxa255_init(tosa_binfo.ram_size);
 
     memory_region_init_rom(rom, NULL, "tosa.rom", TOSA_ROM, &error_fatal);
     memory_region_add_subregion(address_space_mem, 0, rom);
diff --git a/include/hw/arm/pxa.h b/include/hw/arm/pxa.h
index 1095504b86..c26007e57f 100644
--- a/include/hw/arm/pxa.h
+++ b/include/hw/arm/pxa.h
@@ -195,6 +195,6 @@ struct PXA2xxI2SState {
 
 PXA2xxState *pxa270_init(MemoryRegion *address_space, unsigned int sdram_size,
                          const char *revision);
-PXA2xxState *pxa255_init(MemoryRegion *address_space, unsigned int sdram_size);
+PXA2xxState *pxa255_init(unsigned int sdram_size);
 
 #endif /* PXA_H */