diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index ca433adb5b..369552ad45 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -2737,10 +2737,10 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
                                           "Set the IOMMU type. "
                                           "Valid values are none and smmuv3");
 
-    object_class_property_add_bool(oc, "default_bus_bypass_iommu",
+    object_class_property_add_bool(oc, "default-bus-bypass-iommu",
                                    virt_get_default_bus_bypass_iommu,
                                    virt_set_default_bus_bypass_iommu);
-    object_class_property_set_description(oc, "default_bus_bypass_iommu",
+    object_class_property_set_description(oc, "default-bus-bypass-iommu",
                                           "Set on/off to enable/disable "
                                           "bypass_iommu for default root bus");