diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c
index 7af808c33c..6045ca11b9 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -665,7 +665,7 @@ static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size)
         addr == s->r_ce_ctrl ||
         addr == R_INTR_CTRL ||
         (addr >= R_SEG_ADDR0 && addr < R_SEG_ADDR0 + s->ctrl->max_slaves) ||
-        (addr >= s->r_ctrl0 && addr < s->r_ctrl0 + s->num_cs)) {
+        (addr >= s->r_ctrl0 && addr < s->r_ctrl0 + s->ctrl->max_slaves)) {
         return s->regs[addr];
     } else {
         qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%" HWADDR_PRIx "\n",