diff --git a/converter/usb_usb/config.h b/converter/usb_usb/config.h
index 7b80fc21..4dbb30db 100644
--- a/converter/usb_usb/config.h
+++ b/converter/usb_usb/config.h
@@ -49,4 +49,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // Note that this also disables power saving and remote wakeup from keyboard completely.
 //#define NO_USB_SUSPEND_LOOP
 
+/* Mechanical locking support. */
+#define LOCKING_SUPPORT_ENABLE
+#define LOCKING_RESYNC_ENABLE
+
 #endif