diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index e66a46f524..37bd720068 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -842,21 +842,24 @@ static void create_fdt_sockets(RISCVVirtState *s,
     riscv_socket_fdt_write_distance_matrix(ms);
 }
 
-static void create_fdt_virtio(RISCVVirtState *s, const MemMapEntry *memmap,
-                              uint32_t irq_virtio_phandle)
+static void create_fdt_virtio(RISCVVirtState *s, uint32_t irq_virtio_phandle)
 {
     int i;
     MachineState *ms = MACHINE(s);
+    hwaddr virtio_base = s->memmap[VIRT_VIRTIO].base;
 
     for (i = 0; i < VIRTIO_COUNT; i++) {
-        g_autofree char *name =  g_strdup_printf("/soc/virtio_mmio@%lx",
-            (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size));
+        g_autofree char *name = NULL;
+        uint64_t size = s->memmap[VIRT_VIRTIO].size;
+        hwaddr addr = virtio_base + i * size;
+
+        name = g_strdup_printf("/soc/virtio_mmio@%"HWADDR_PRIx, addr);
 
         qemu_fdt_add_subnode(ms->fdt, name);
         qemu_fdt_setprop_string(ms->fdt, name, "compatible", "virtio,mmio");
         qemu_fdt_setprop_cells(ms->fdt, name, "reg",
-            0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size,
-            0x0, memmap[VIRT_VIRTIO].size);
+                               0x0, addr,
+                               0x0, size);
         qemu_fdt_setprop_cell(ms->fdt, name, "interrupt-parent",
             irq_virtio_phandle);
         if (s->aia_type == VIRT_AIA_TYPE_NONE) {
@@ -1135,7 +1138,7 @@ static void finalize_fdt(RISCVVirtState *s)
                        &irq_pcie_phandle, &irq_virtio_phandle,
                        &msi_pcie_phandle);
 
-    create_fdt_virtio(s, s->memmap, irq_virtio_phandle);
+    create_fdt_virtio(s, irq_virtio_phandle);
 
     if (virt_is_iommu_sys_enabled(s)) {
         create_fdt_iommu_sys(s, irq_mmio_phandle, msi_pcie_phandle,