diff --git a/backends/rng-egd.c b/backends/rng-egd.c
index 2962795..849bd7a 100644
--- a/backends/rng-egd.c
+++ b/backends/rng-egd.c
@@ -147,7 +147,8 @@ static void rng_egd_opened(RngBackend *b, Error **errp)
 
     s->chr = qemu_chr_find(s->chr_name);
     if (s->chr == NULL) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, s->chr_name);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", s->chr_name);
         return;
     }
 
diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index 0d9df47..128e810 100644
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -91,7 +91,8 @@ void qmp_nbd_server_add(const char *device, bool has_writable, bool writable,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     if (!blk_is_inserted(blk)) {
diff --git a/blockdev.c b/blockdev.c
index a88ea76..8dec0cc 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1102,7 +1102,8 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return NULL;
     }
     bs = blk_bs(blk);
@@ -1291,7 +1292,8 @@ static void internal_snapshot_prepare(BlkTransactionState *common,
     /* 2. check for validation */
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -1571,7 +1573,8 @@ static void drive_backup_prepare(BlkTransactionState *common, Error **errp)
 
     blk = blk_by_name(backup->device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, backup->device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", backup->device);
         return;
     }
     bs = blk_bs(blk);
@@ -1841,7 +1844,8 @@ void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
 
@@ -1901,7 +1905,8 @@ void qmp_change_blockdev(const char *device, const char *filename,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -1960,7 +1965,8 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -2275,7 +2281,8 @@ void qmp_block_stream(const char *device,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -2349,7 +2356,8 @@ void qmp_block_commit(const char *device,
      *  scenario in which all optional arguments are omitted. */
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -2461,7 +2469,8 @@ void qmp_drive_backup(const char *device, const char *target,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -2675,7 +2684,8 @@ void qmp_drive_mirror(const char *device, const char *target,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
@@ -2941,7 +2951,8 @@ void qmp_change_backing_file(const char *device,
 
     blk = blk_by_name(device);
     if (!blk) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
         return;
     }
     bs = blk_bs(blk);
diff --git a/hmp.c b/hmp.c
index 05e4927..6f63927 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1863,7 +1863,8 @@ void hmp_qemu_io(Monitor *mon, const QDict *qdict)
     if (blk) {
         qemuio_command(blk, command);
     } else {
-        error_set(&err, QERR_DEVICE_NOT_FOUND, device);
+        error_set(&err, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device);
     }
 
     hmp_handle_error(mon, &err);
@@ -1991,7 +1992,8 @@ void hmp_qom_set(Monitor *mon, const QDict *qdict)
 
     obj = object_resolve_path(path, &ambiguous);
     if (obj == NULL) {
-        error_set(&err, QERR_DEVICE_NOT_FOUND, path);
+        error_set(&err, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", path);
     } else {
         if (ambiguous) {
             monitor_printf(mon, "Warning: Path '%s' is ambiguous\n", path);
diff --git a/include/qapi/qmp/qerror.h b/include/qapi/qmp/qerror.h
index 6468e40..2841344 100644
--- a/include/qapi/qmp/qerror.h
+++ b/include/qapi/qmp/qerror.h
@@ -55,9 +55,6 @@ void qerror_report_err(Error *err);
 #define QERR_DEVICE_NO_HOTPLUG \
     ERROR_CLASS_GENERIC_ERROR, "Device '%s' does not support hotplugging"
 
-#define QERR_DEVICE_NOT_FOUND \
-    ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found"
-
 #define QERR_FD_NOT_FOUND \
     ERROR_CLASS_GENERIC_ERROR, "File descriptor named '%s' not found"
 
diff --git a/net/net.c b/net/net.c
index 429012f..212762d 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1109,7 +1109,8 @@ void qmp_netdev_del(const char *id, Error **errp)
 
     nc = qemu_find_netdev(id);
     if (!nc) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, id);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", id);
         return;
     }
 
@@ -1220,7 +1221,8 @@ void qmp_set_link(const char *name, bool up, Error **errp)
                                           MAX_QUEUE_NUM);
 
     if (queues == 0) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, name);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", name);
         return;
     }
     nc = ncs[0];
diff --git a/qdev-monitor.c b/qdev-monitor.c
index e1dd367..7bd7d25 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -457,7 +457,8 @@ static BusState *qbus_find(const char *path, Error **errp)
         pos += len;
         dev = qbus_find_dev(bus, elem);
         if (!dev) {
-            error_set(errp, QERR_DEVICE_NOT_FOUND, elem);
+            error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                      "Device '%s' not found", elem);
 #if 0 /* conversion from qerror_report() to error_set() broke this: */
             if (!monitor_cur_is_qmp()) {
                 qbus_list_dev(bus);
@@ -793,7 +794,8 @@ void qmp_device_del(const char *id, Error **errp)
     g_free(path);
 
     if (!obj) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, id);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", id);
         return;
     }
 
diff --git a/qmp.c b/qmp.c
index 60658b4..14f7536 100644
--- a/qmp.c
+++ b/qmp.c
@@ -206,7 +206,8 @@ ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
         if (ambiguous) {
             error_setg(errp, "Path '%s' is ambiguous", path);
         } else {
-            error_set(errp, QERR_DEVICE_NOT_FOUND, path);
+            error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                      "Device '%s' not found", path);
         }
         return NULL;
     }
@@ -236,7 +237,8 @@ int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret)
 
     obj = object_resolve_path(path, NULL);
     if (!obj) {
-        error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
+        error_set(&local_err, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", path);
         goto out;
     }
 
@@ -261,7 +263,8 @@ int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret)
 
     obj = object_resolve_path(path, NULL);
     if (!obj) {
-        error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
+        error_set(&local_err, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", path);
         goto out;
     }
 
@@ -518,7 +521,8 @@ DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
 
     klass = object_class_by_name(typename);
     if (klass == NULL) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, typename);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", typename);
         return NULL;
     }
 
diff --git a/qom/object.c b/qom/object.c
index 96abd34..62fa44e 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -890,7 +890,8 @@ Object *object_property_get_link(Object *obj, const char *name,
     if (str && *str) {
         target = object_resolve_path(str, NULL);
         if (!target) {
-            error_set(errp, QERR_DEVICE_NOT_FOUND, str);
+            error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                      "Device '%s' not found", str);
         }
     }
 
@@ -1170,7 +1171,8 @@ static Object *object_resolve_link(Object *obj, const char *name,
         if (target || ambiguous) {
             error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
         } else {
-            error_set(errp, QERR_DEVICE_NOT_FOUND, path);
+            error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                      "Device '%s' not found", path);
         }
         target = NULL;
     }
diff --git a/ui/input.c b/ui/input.c
index eeeabe8..e96e1ea 100644
--- a/ui/input.c
+++ b/ui/input.c
@@ -84,7 +84,8 @@ void qemu_input_handler_bind(QemuInputHandlerState *s,
 
     dev = qdev_find_recursive(sysbus_get_default(), device_id);
     if (dev == NULL) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, device_id);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device_id);
         return;
     }
 
