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-rw-r--r--hw/i386/pc_piix.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 99efb3c45c..ebb51de380 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -526,12 +526,15 @@ DEFINE_I440FX_MACHINE(v9_1, "pc-i440fx-9.1", NULL,
 
 static void pc_i440fx_9_0_machine_options(MachineClass *m)
 {
+    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+
     pc_i440fx_9_1_machine_options(m);
     m->alias = NULL;
     m->is_default = false;
 
     compat_props_add(m->compat_props, hw_compat_9_0, hw_compat_9_0_len);
     compat_props_add(m->compat_props, pc_compat_9_0, pc_compat_9_0_len);
+    pcmc->isa_bios_alias = false;
 }
 
 DEFINE_I440FX_MACHINE(v9_0, "pc-i440fx-9.0", NULL,