diff --git a/DBusInterface.md b/DBusInterface.md
index 7f46b5da..dd2ab726 100644
--- a/DBusInterface.md
+++ b/DBusInterface.md
@@ -20,8 +20,8 @@ unless otherwise specified.
 
 All setters (whether implicit for read-write properties or explicit) return
 success instead of the internal return value because DBus does not like
-non-standard error values. This means that clients should check for capabilities
-beforehand and that the `Commit()` method (see below) signals an error.
+non-standard error values. Upon a ratbag error, the `Resync` signal is emitted
+on the device, indicating that clients should resync their values.
 
 org.freedesktop.ratbag1.Manager
 ===============================
@@ -105,6 +105,13 @@ guaranteed to be available. ratbagd may return the path to a file that
 doesn't exist. This is the case if the device has SVGs available but not for
 the given theme.
 
+### Signals:
+
+#### `Resync()`
+
+Emitted when an internal error occurs. Upon receiving this signal, clients are
+expected to resync their values with ratbagd.
+
 org.freedesktop.ratbag1.Profile
 ===============================
 
diff --git a/ratbagd/ratbagd-device.c b/ratbagd/ratbagd-device.c
index 47d44f93..7f33eab2 100644
--- a/ratbagd/ratbagd-device.c
+++ b/ratbagd/ratbagd-device.c
@@ -278,6 +278,7 @@ const sd_bus_vtable ratbagd_device_vtable[] = {
 	SD_BUS_PROPERTY("Profiles", "ao", ratbagd_device_get_profiles, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 	SD_BUS_METHOD("GetSvg", "s", "s", ratbagd_device_get_theme_svg, SD_BUS_VTABLE_UNPRIVILEGED),
 	SD_BUS_METHOD("Commit", "", "u", ratbagd_device_commit, SD_BUS_VTABLE_UNPRIVILEGED),
+	SD_BUS_SIGNAL("Resync", "", 0),
 	SD_BUS_VTABLE_END,
 };
 
@@ -384,6 +385,17 @@ unsigned int ratbagd_device_get_num_leds(struct ratbagd_device *device)
 	return ratbag_device_get_num_leds(device->lib_device);
 }
 
+int ratbagd_device_resync(struct ratbagd_device *device, sd_bus *bus)
+{
+	assert(device);
+	assert(bus);
+	return sd_bus_emit_signal(bus,
+				  device->path,
+				  RATBAGD_NAME_ROOT ".Device",
+				  "Resync",
+				  NULL);
+}
+
 bool ratbagd_device_linked(struct ratbagd_device *device)
 {
 	return device && rbnode_linked(&device->node);
diff --git a/ratbagd/ratbagd.h b/ratbagd/ratbagd.h
index 75eb9a1a..ebdabdde 100644
--- a/ratbagd/ratbagd.h
+++ b/ratbagd/ratbagd.h
@@ -152,6 +152,7 @@ const char *ratbagd_device_get_name(struct ratbagd_device *device);
 const char *ratbagd_device_get_path(struct ratbagd_device *device);
 unsigned int ratbagd_device_get_num_buttons(struct ratbagd_device *device);
 unsigned int ratbagd_device_get_num_leds(struct ratbagd_device *device);
+int ratbagd_device_resync(struct ratbagd_device *device, sd_bus *bus);
 
 bool ratbagd_device_linked(struct ratbagd_device *device);
 void ratbagd_device_link(struct ratbagd_device *device);