diff --git a/hw/mips/malta.c b/hw/mips/malta.c
index 1e2b750719..a4a4c38626 100644
--- a/hw/mips/malta.c
+++ b/hw/mips/malta.c
@@ -578,7 +578,7 @@ static MaltaFPGAState *malta_fpga_init(MemoryRegion *address_space,
     memory_region_init_alias(&s->iomem_lo, NULL, "malta-fpga",
                              &s->iomem, 0, 0x900);
     memory_region_init_alias(&s->iomem_hi, NULL, "malta-fpga",
-                             &s->iomem, 0xa00, 0x10000 - 0xa00);
+                             &s->iomem, 0xa00, 0x100000 - 0xa00);
 
     memory_region_add_subregion(address_space, base, &s->iomem_lo);
     memory_region_add_subregion(address_space, base + 0xa00, &s->iomem_hi);