diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index da73743fa2ab..47293a39157c 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -144,7 +144,7 @@ static void i440fx_update_memory_mappings(PCII440FXState *d)
     memory_region_transaction_begin();
     for (i = 0; i < 13; i++) {
         pam_update(&d->pam_regions[i], i,
-                   pd->config[I440FX_PAM + (DIV_ROUND_UP(i, 2))]);
+                   pd->config[I440FX_PAM + DIV_ROUND_UP(i, 2)]);
     }
     memory_region_set_enabled(&d->smram_region,
                               !(pd->config[I440FX_SMRAM] & SMRAM_D_OPEN));
diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index 8ce1e0993252..966a7cf92dfe 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -356,7 +356,7 @@ static void mch_update_pam(MCHPCIState *mch)
     memory_region_transaction_begin();
     for (i = 0; i < 13; i++) {
         pam_update(&mch->pam_regions[i], i,
-                   pd->config[MCH_HOST_BRIDGE_PAM0 + (DIV_ROUND_UP(i, 2))]);
+                   pd->config[MCH_HOST_BRIDGE_PAM0 + DIV_ROUND_UP(i, 2)]);
     }
     memory_region_transaction_commit();
 }