diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index e4c814a3ea..b139824aab 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -634,6 +634,9 @@ static void sifive_u_machine_init(MachineState *machine)
         start_addr_hi32 = (uint64_t)start_addr >> 32;
     }
 
+    /* Set machine->fdt for 'dumpdtb' QMP/HMP command */
+    machine->fdt = s->fdt;
+
     /* reset vector */
     uint32_t reset_vec[12] = {
         s->msel,                       /* MSEL pin state */