diff --git a/block.c b/block.c
index b90dbe036c..288efbca98 100644
--- a/block.c
+++ b/block.c
@@ -35,6 +35,7 @@
 #include "block/qapi.h"
 #include "qmp-commands.h"
 #include "qemu/timer.h"
+#include "qapi-event.h"
 
 #ifdef CONFIG_BSD
 #include <sys/types.h>
@@ -2162,17 +2163,6 @@ void bdrv_emit_qmp_error_event(const BlockDriverState *bdrv,
     qobject_decref(data);
 }
 
-static void bdrv_emit_qmp_eject_event(BlockDriverState *bs, bool ejected)
-{
-    QObject *data;
-
-    data = qobject_from_jsonf("{ 'device': %s, 'tray-open': %i }",
-                              bdrv_get_device_name(bs), ejected);
-    monitor_protocol_event(QEVENT_DEVICE_TRAY_MOVED, data);
-
-    qobject_decref(data);
-}
-
 static void bdrv_dev_change_media_cb(BlockDriverState *bs, bool load)
 {
     if (bs->dev_ops && bs->dev_ops->change_media_cb) {
@@ -2180,11 +2170,13 @@ static void bdrv_dev_change_media_cb(BlockDriverState *bs, bool load)
         bs->dev_ops->change_media_cb(bs->dev_opaque, load);
         if (tray_was_closed) {
             /* tray open */
-            bdrv_emit_qmp_eject_event(bs, true);
+            qapi_event_send_device_tray_moved(bdrv_get_device_name(bs),
+                                              true, &error_abort);
         }
         if (load) {
             /* tray close */
-            bdrv_emit_qmp_eject_event(bs, false);
+            qapi_event_send_device_tray_moved(bdrv_get_device_name(bs),
+                                              false, &error_abort);
         }
     }
 }
@@ -5217,7 +5209,8 @@ void bdrv_eject(BlockDriverState *bs, bool eject_flag)
     }
 
     if (bs->device_name[0] != '\0') {
-        bdrv_emit_qmp_eject_event(bs, eject_flag);
+        qapi_event_send_device_tray_moved(bdrv_get_device_name(bs),
+                                          eject_flag, &error_abort);
     }
 }
 
diff --git a/docs/qmp/qmp-events.txt b/docs/qmp/qmp-events.txt
index 1792c0c518..d97b389b07 100644
--- a/docs/qmp/qmp-events.txt
+++ b/docs/qmp/qmp-events.txt
@@ -168,24 +168,6 @@ Example:
 Note: The "ready to complete" status is always reset by a BLOCK_JOB_ERROR
 event.
 
-DEVICE_TRAY_MOVED
------------------
-
-It's emitted whenever the tray of a removable device is moved by the guest
-or by HMP/QMP commands.
-
-Data:
-
-- "device": device name (json-string)
-- "tray-open": true if the tray has been opened or false if it has been closed
-               (json-bool)
-
-{ "event": "DEVICE_TRAY_MOVED",
-  "data": { "device": "ide1-cd0",
-            "tray-open": true
-  },
-  "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
-
 GUEST_PANICKED
 --------------
 
diff --git a/qapi/block.json b/qapi/block.json
index 61c463ab05..e3134657b6 100644
--- a/qapi/block.json
+++ b/qapi/block.json
@@ -164,3 +164,17 @@
 ##
 { 'command': 'nbd-server-stop' }
 
+##
+# @DEVICE_TRAY_MOVED
+#
+# Emitted whenever the tray of a removable device is moved by the guest or by
+# HMP/QMP commands
+#
+# @device: device name
+#
+# @tray-open: true if the tray has been opened or false if it has been closed
+#
+# Since: 1.1
+##
+{ 'event': 'DEVICE_TRAY_MOVED',
+  'data': { 'device': 'str', 'tray-open': 'bool' } }