diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 40585ca7d5..4a61894db6 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -151,11 +151,6 @@ property types.
 QEMU Machine Protocol (QMP) events
 ----------------------------------
 
-``MEM_UNPLUG_ERROR`` (since 6.2)
-''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-Use the more generic event ``DEVICE_UNPLUG_GUEST_ERROR`` instead.
-
 ``vcpu`` trace events (since 8.1)
 '''''''''''''''''''''''''''''''''
 
diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
index fba0cfb0b0..f1e70263e2 100644
--- a/docs/about/removed-features.rst
+++ b/docs/about/removed-features.rst
@@ -671,6 +671,15 @@ Use ``multifd-channels`` instead.
 
 Use ``multifd-compression`` instead.
 
+QEMU Machine Protocol (QMP) events
+----------------------------------
+
+``MEM_UNPLUG_ERROR`` (removed in 9.1)
+'''''''''''''''''''''''''''''''''''''
+
+MEM_UNPLUG_ERROR has been replaced by the more generic ``DEVICE_UNPLUG_GUEST_ERROR`` event.
+
+
 Human Monitor Protocol (HMP) commands
 -------------------------------------
 
diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
index de6f974ebb..9b974b7274 100644
--- a/hw/acpi/memory_hotplug.c
+++ b/hw/acpi/memory_hotplug.c
@@ -178,14 +178,6 @@ static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
             hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
             if (local_err) {
                 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector);
-
-                /*
-                 * Send both MEM_UNPLUG_ERROR and DEVICE_UNPLUG_GUEST_ERROR
-                 * while the deprecation of MEM_UNPLUG_ERROR is
-                 * pending.
-                 */
-                qapi_event_send_mem_unplug_error(dev->id ? : "",
-                                                 error_get_pretty(local_err));
                 qapi_event_send_device_unplug_guest_error(dev->id,
                                                           dev->canonical_path);
                 error_free(local_err);
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 4345764bce..81a187f126 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3786,7 +3786,6 @@ void spapr_memory_unplug_rollback(SpaprMachineState *spapr, DeviceState *dev)
     SpaprDrc *drc;
     uint32_t nr_lmbs;
     uint64_t size, addr_start, addr;
-    g_autofree char *qapi_error = NULL;
     int i;
 
     if (!dev) {
@@ -3823,16 +3822,8 @@ void spapr_memory_unplug_rollback(SpaprMachineState *spapr, DeviceState *dev)
 
     /*
      * Tell QAPI that something happened and the memory
-     * hotunplug wasn't successful. Keep sending
-     * MEM_UNPLUG_ERROR even while sending
-     * DEVICE_UNPLUG_GUEST_ERROR until the deprecation of
-     * MEM_UNPLUG_ERROR is due.
+     * hotunplug wasn't successful.
      */
-    qapi_error = g_strdup_printf("Memory hotunplug rejected by the guest "
-                                 "for device %s", dev->id);
-
-    qapi_event_send_mem_unplug_error(dev->id ? : "", qapi_error);
-
     qapi_event_send_device_unplug_guest_error(dev->id,
                                               dev->canonical_path);
 }
diff --git a/qapi/machine.json b/qapi/machine.json
index bce6e1bbc4..453feb9347 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1607,34 +1607,6 @@
 { 'event': 'MEMORY_DEVICE_SIZE_CHANGE',
   'data': { '*id': 'str', 'size': 'size', 'qom-path' : 'str'} }
 
-##
-# @MEM_UNPLUG_ERROR:
-#
-# Emitted when memory hot unplug error occurs.
-#
-# @device: device name
-#
-# @msg: Informative message
-#
-# Features:
-#
-# @deprecated: This event is deprecated.  Use
-#     @DEVICE_UNPLUG_GUEST_ERROR instead.
-#
-# Since: 2.4
-#
-# Example:
-#
-#     <- { "event": "MEM_UNPLUG_ERROR",
-#          "data": { "device": "dimm1",
-#                    "msg": "acpi: device unplug for unsupported device"
-#          },
-#          "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
-##
-{ 'event': 'MEM_UNPLUG_ERROR',
-  'data': { 'device': 'str', 'msg': 'str' },
-  'features': ['deprecated'] }
-
 ##
 # @BootConfiguration:
 #