diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 9dbcbcd57c661eb8aaffcb3865d51d35c4f1a647..f79d5cb69414ad7afda3e1daed6ac83f9606d848 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -426,7 +426,6 @@ static void pc_i440fx_machine_options(MachineClass *m)
 {
     m->family = "pc_piix";
     m->desc = "Standard PC (i440FX + PIIX, 1996)";
-    m->hot_add_cpu = pc_hot_add_cpu;
     m->default_machine_opts = "firmware=bios-256k.bin";
     m->default_display = "std";
 }
@@ -1125,7 +1124,6 @@ static void xenfv_machine_options(MachineClass *m)
     m->desc = "Xen Fully-virtualized PC";
     m->max_cpus = HVM_MAX_VCPUS;
     m->default_machine_opts = "accel=xen";
-    m->hot_add_cpu = pc_hot_add_cpu;
 }
 
 DEFINE_PC_MACHINE(xenfv, "xenfv", pc_xen_hvm_init,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 6c4ec4be4eef892c75a7b6c9c4537847f413b4cc..da3ea602e1c3551a5822cd189e2ac853b2506e0f 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -295,7 +295,6 @@ static void pc_q35_machine_options(MachineClass *m)
 {
     m->family = "pc_q35";
     m->desc = "Standard PC (Q35 + ICH9, 2009)";
-    m->hot_add_cpu = pc_hot_add_cpu;
     m->units_per_default_bus = 1;
     m->default_machine_opts = "firmware=bios-256k.bin";
     m->default_display = "std";