diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 2f49f97924df0ef7f61144a3172cd131f1b9c28c..d21e95cf6bf8ff05c31332b5275d50acc2333bf5 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1715,7 +1715,7 @@ static void ppc_spapr_init(MachineState *machine)
      * more than needed for the Linux guests we support. */
     spapr->htab_shift = 18; /* Minimum architected size */
     while (spapr->htab_shift <= 46) {
-        if ((1ULL << (spapr->htab_shift + 7)) >= machine->ram_size) {
+        if ((1ULL << (spapr->htab_shift + 7)) >= machine->maxram_size) {
             break;
         }
         spapr->htab_shift++;