diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 57c006df5d..0bbfd7f457 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -628,6 +628,7 @@ static const TypeInfo riscv_cpu_type_infos[] = {
         .name = TYPE_RISCV_CPU,
         .parent = TYPE_CPU,
         .instance_size = sizeof(RISCVCPU),
+        .instance_align = __alignof__(RISCVCPU),
         .instance_init = riscv_cpu_init,
         .abstract = true,
         .class_size = sizeof(RISCVCPUClass),