diff --git a/authz/listfile.c b/authz/listfile.c
index d4579767e7..bc2b58ef6d 100644
--- a/authz/listfile.c
+++ b/authz/listfile.c
@@ -93,7 +93,7 @@ qauthz_list_file_load(QAuthZListFile *fauthz, Error **errp)
 
 
 static void
-qauthz_list_file_event(int wd G_GNUC_UNUSED,
+qauthz_list_file_event(int64_t wd G_GNUC_UNUSED,
                        QFileMonitorEvent ev G_GNUC_UNUSED,
                        const char *name G_GNUC_UNUSED,
                        void *opaque)
diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index 06e376bcd2..0cce3f53fe 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -170,7 +170,7 @@ struct MTPObject {
     char         *path;
     struct stat  stat;
     /* file monitor watch id */
-    int          watchid;
+    int64_t      watchid;
     MTPObject    *parent;
     uint32_t     nchildren;
     QLIST_HEAD(, MTPObject) children;
@@ -498,7 +498,7 @@ static MTPObject *usb_mtp_object_lookup_name(MTPObject *parent,
     return NULL;
 }
 
-static MTPObject *usb_mtp_object_lookup_id(MTPState *s, int id)
+static MTPObject *usb_mtp_object_lookup_id(MTPState *s, int64_t id)
 {
     MTPObject *iter;
 
@@ -511,7 +511,7 @@ static MTPObject *usb_mtp_object_lookup_id(MTPState *s, int id)
     return NULL;
 }
 
-static void file_monitor_event(int id,
+static void file_monitor_event(int64_t id,
                                QFileMonitorEvent ev,
                                const char *name,
                                void *opaque)
@@ -625,8 +625,8 @@ static void usb_mtp_object_readdir(MTPState *s, MTPObject *o)
     }
 
     if (s->file_monitor) {
-        int id = qemu_file_monitor_add_watch(s->file_monitor, o->path, NULL,
-                                             file_monitor_event, s, &err);
+        int64_t id = qemu_file_monitor_add_watch(s->file_monitor, o->path, NULL,
+                                                 file_monitor_event, s, &err);
         if (id == -1) {
             error_report("usb-mtp: failed to add watch for %s: %s", o->path,
                          error_get_pretty(err));
diff --git a/include/authz/listfile.h b/include/authz/listfile.h
index bcc8d80743..9118a703ec 100644
--- a/include/authz/listfile.h
+++ b/include/authz/listfile.h
@@ -92,7 +92,7 @@ struct QAuthZListFile {
     char *filename;
     bool refresh;
     QFileMonitor *file_monitor;
-    int file_watch;
+    int64_t file_watch;
 };
 
 
diff --git a/include/qemu/filemonitor.h b/include/qemu/filemonitor.h
index cd031832ed..64267d09b2 100644
--- a/include/qemu/filemonitor.h
+++ b/include/qemu/filemonitor.h
@@ -52,7 +52,7 @@ typedef enum {
  * empty.
  *
  */
-typedef void (*QFileMonitorHandler)(int id,
+typedef void (*QFileMonitorHandler)(int64_t id,
                                     QFileMonitorEvent event,
                                     const char *filename,
                                     void *opaque);
@@ -103,12 +103,12 @@ void qemu_file_monitor_free(QFileMonitor *mon);
  *
  * Returns: a positive integer watch ID, or -1 on error
  */
-int qemu_file_monitor_add_watch(QFileMonitor *mon,
-                                const char *dirpath,
-                                const char *filename,
-                                QFileMonitorHandler cb,
-                                void *opaque,
-                                Error **errp);
+int64_t qemu_file_monitor_add_watch(QFileMonitor *mon,
+                                    const char *dirpath,
+                                    const char *filename,
+                                    QFileMonitorHandler cb,
+                                    void *opaque,
+                                    Error **errp);
 
 /**
  * qemu_file_monitor_remove_watch:
@@ -123,6 +123,6 @@ int qemu_file_monitor_add_watch(QFileMonitor *mon,
  */
 void qemu_file_monitor_remove_watch(QFileMonitor *mon,
                                     const char *dirpath,
-                                    int id);
+                                    int64_t id);
 
 #endif /* QEMU_FILE_MONITOR_H */
diff --git a/util/filemonitor-inotify.c b/util/filemonitor-inotify.c
index 3eb29f860b..b5f4b93f3f 100644
--- a/util/filemonitor-inotify.c
+++ b/util/filemonitor-inotify.c
@@ -29,7 +29,6 @@
 
 struct QFileMonitor {
     int fd;
-    int nextid; /* watch ID counter */
     QemuMutex lock; /* protects dirs & idmap */
     GHashTable *dirs; /* dirname => QFileMonitorDir */
     GHashTable *idmap; /* inotify ID => dirname */
@@ -37,7 +36,7 @@ struct QFileMonitor {
 
 
 typedef struct {
-    int id; /* watch ID */
+    int64_t id; /* watch ID */
     char *filename; /* optional filter */
     QFileMonitorHandler cb;
     void *opaque;
@@ -46,7 +45,8 @@ typedef struct {
 
 typedef struct {
     char *path;
-    int id; /* inotify ID */
+    int inotify_id; /* inotify ID */
+    int next_file_id; /* file ID counter */
     GArray *watches; /* QFileMonitorWatch elements */
 } QFileMonitorDir;
 
@@ -126,7 +126,8 @@ static void qemu_file_monitor_watch(void *arg)
             g_assert_not_reached();
         }
 
-        trace_qemu_file_monitor_event(mon, dir->path, name, ev->mask, dir->id);
+        trace_qemu_file_monitor_event(mon, dir->path, name, ev->mask,
+                                      dir->inotify_id);
         for (i = 0; i < dir->watches->len; i++) {
             QFileMonitorWatch *watch = &g_array_index(dir->watches,
                                                       QFileMonitorWatch,
@@ -237,7 +238,7 @@ qemu_file_monitor_free(QFileMonitor *mon)
     g_idle_add((GSourceFunc)qemu_file_monitor_free_idle, mon);
 }
 
-int
+int64_t
 qemu_file_monitor_add_watch(QFileMonitor *mon,
                             const char *dirpath,
                             const char *filename,
@@ -247,7 +248,7 @@ qemu_file_monitor_add_watch(QFileMonitor *mon,
 {
     QFileMonitorDir *dir;
     QFileMonitorWatch watch;
-    int ret = -1;
+    int64_t ret = -1;
 
     qemu_mutex_lock(&mon->lock);
     dir = g_hash_table_lookup(mon->dirs, dirpath);
@@ -265,7 +266,7 @@ qemu_file_monitor_add_watch(QFileMonitor *mon,
 
         dir = g_new0(QFileMonitorDir, 1);
         dir->path = g_strdup(dirpath);
-        dir->id = rv;
+        dir->inotify_id = rv;
         dir->watches = g_array_new(FALSE, TRUE, sizeof(QFileMonitorWatch));
 
         g_hash_table_insert(mon->dirs, dir->path, dir);
@@ -276,7 +277,7 @@ qemu_file_monitor_add_watch(QFileMonitor *mon,
         }
     }
 
-    watch.id = mon->nextid++;
+    watch.id = (((int64_t)dir->inotify_id) << 32) | dir->next_file_id++;
     watch.filename = g_strdup(filename);
     watch.cb = cb;
     watch.opaque = opaque;
@@ -297,7 +298,7 @@ qemu_file_monitor_add_watch(QFileMonitor *mon,
 
 void qemu_file_monitor_remove_watch(QFileMonitor *mon,
                                     const char *dirpath,
-                                    int id)
+                                    int64_t id)
 {
     QFileMonitorDir *dir;
     gsize i;
@@ -322,10 +323,10 @@ void qemu_file_monitor_remove_watch(QFileMonitor *mon,
     }
 
     if (dir->watches->len == 0) {
-        inotify_rm_watch(mon->fd, dir->id);
-        trace_qemu_file_monitor_disable_watch(mon, dir->path, dir->id);
+        inotify_rm_watch(mon->fd, dir->inotify_id);
+        trace_qemu_file_monitor_disable_watch(mon, dir->path, dir->inotify_id);
 
-        g_hash_table_remove(mon->idmap, GINT_TO_POINTER(dir->id));
+        g_hash_table_remove(mon->idmap, GINT_TO_POINTER(dir->inotify_id));
         g_hash_table_remove(mon->dirs, dir->path);
 
         if (g_hash_table_size(mon->dirs) == 0) {
diff --git a/util/filemonitor-stub.c b/util/filemonitor-stub.c
index 48268b2bb6..2c0e97edd8 100644
--- a/util/filemonitor-stub.c
+++ b/util/filemonitor-stub.c
@@ -38,7 +38,7 @@ qemu_file_monitor_free(QFileMonitor *mon G_GNUC_UNUSED)
 }
 
 
-int
+int64_t
 qemu_file_monitor_add_watch(QFileMonitor *mon G_GNUC_UNUSED,
                             const char *dirpath G_GNUC_UNUSED,
                             const char *filename G_GNUC_UNUSED,
@@ -54,6 +54,6 @@ qemu_file_monitor_add_watch(QFileMonitor *mon G_GNUC_UNUSED,
 void
 qemu_file_monitor_remove_watch(QFileMonitor *mon G_GNUC_UNUSED,
                                const char *dirpath G_GNUC_UNUSED,
-                               int id G_GNUC_UNUSED)
+                               int64_t id G_GNUC_UNUSED)
 {
 }
diff --git a/util/trace-events b/util/trace-events
index ff19b253e2..8d22e16ce1 100644
--- a/util/trace-events
+++ b/util/trace-events
@@ -22,13 +22,13 @@ buffer_move(const char *buf, size_t len, const char *from) "%s: %zd bytes from %
 buffer_free(const char *buf, size_t len) "%s: capacity %zd"
 
 # util/filemonitor.c
-qemu_file_monitor_add_watch(void *mon, const char *dirpath, const char *filename, void *cb, void *opaque, int id) "File monitor %p add watch dir='%s' file='%s' cb=%p opaque=%p id=%u"
-qemu_file_monitor_remove_watch(void *mon, const char *dirpath, int id) "File monitor %p remove watch dir='%s' id=%u"
+qemu_file_monitor_add_watch(void *mon, const char *dirpath, const char *filename, void *cb, void *opaque, int64_t id) "File monitor %p add watch dir='%s' file='%s' cb=%p opaque=%p id=%" PRId64
+qemu_file_monitor_remove_watch(void *mon, const char *dirpath, int64_t id) "File monitor %p remove watch dir='%s' id=%" PRId64
 qemu_file_monitor_new(void *mon, int fd) "File monitor %p created fd=%d"
 qemu_file_monitor_enable_watch(void *mon, const char *dirpath, int id) "File monitor %p enable watch dir='%s' id=%u"
 qemu_file_monitor_disable_watch(void *mon, const char *dirpath, int id) "Fle monitor %p disable watch dir='%s' id=%u"
 qemu_file_monitor_event(void *mon, const char *dirpath, const char *filename, int mask, unsigned int id) "File monitor %p event dir='%s' file='%s' mask=0x%x id=%u"
-qemu_file_monitor_dispatch(void *mon, const char *dirpath, const char *filename, int ev, void *cb, void *opaque, unsigned int id) "File monitor %p dispatch dir='%s' file='%s' ev=%d cb=%p opaque=%p id=%u"
+qemu_file_monitor_dispatch(void *mon, const char *dirpath, const char *filename, int ev, void *cb, void *opaque, int64_t id) "File monitor %p dispatch dir='%s' file='%s' ev=%d cb=%p opaque=%p id=%" PRId64
 
 # util/qemu-coroutine.c
 qemu_aio_coroutine_enter(void *ctx, void *from, void *to, void *opaque) "ctx %p from %p to %p opaque %p"
