diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index cc8f311e6b..23f340df19 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -62,7 +62,7 @@ static const struct MemmapEntry {
     [VIRT_PLIC] =        {  0xc000000,     0x4000000 },
     [VIRT_UART0] =       { 0x10000000,         0x100 },
     [VIRT_VIRTIO] =      { 0x10001000,        0x1000 },
-    [VIRT_FLASH] =       { 0x20000000,     0x2000000 },
+    [VIRT_FLASH] =       { 0x20000000,     0x4000000 },
     [VIRT_DRAM] =        { 0x80000000,           0x0 },
     [VIRT_PCIE_MMIO] =   { 0x40000000,    0x40000000 },
     [VIRT_PCIE_PIO] =    { 0x03000000,    0x00010000 },