diff --git a/hw/ppc_newworld.c b/hw/ppc_newworld.c
index 69718cfcdd..b1cc3d70a7 100644
--- a/hw/ppc_newworld.c
+++ b/hw/ppc_newworld.c
@@ -325,7 +325,7 @@ static void ppc_core99_init (ram_addr_t ram_size,
     /* init basic PC hardware */
     pci_vga_init(pci_bus);
 
-    escc_mem = escc_init(0x80013000, pic[0x25], pic[0x24],
+    escc_mem = escc_init(0, pic[0x25], pic[0x24],
                          serial_hds[0], serial_hds[1], ESCC_CLOCK, 4);
     memory_region_init_alias(escc_bar, "escc-bar",
                              escc_mem, 0, memory_region_size(escc_mem));
diff --git a/hw/ppc_oldworld.c b/hw/ppc_oldworld.c
index e127d21d58..fa2c1e7768 100644
--- a/hw/ppc_oldworld.c
+++ b/hw/ppc_oldworld.c
@@ -237,7 +237,7 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
                                get_system_io());
     pci_vga_init(pci_bus);
 
-    escc_mem = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
+    escc_mem = escc_init(0, pic[0x0f], pic[0x10], serial_hds[0],
                                serial_hds[1], ESCC_CLOCK, 4);
     memory_region_init_alias(escc_bar, "escc-bar",
                              escc_mem, 0, memory_region_size(escc_mem));