diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 80a65d965f..67a921779c 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1823,6 +1823,8 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
 
     object_class_property_add_bool(oc, PC_MACHINE_I8042,
         pc_machine_get_i8042, pc_machine_set_i8042);
+    object_class_property_set_description(oc, PC_MACHINE_I8042,
+        "Enable/disable Intel 8042 PS/2 controller emulation");
 
     object_class_property_add_bool(oc, "default-bus-bypass-iommu",
         pc_machine_get_default_bus_bypass_iommu,