diff --git a/example/libusb/profile.gatt b/example/libusb/profile.gatt
index 30ea573c7..ead7b7af1 100644
--- a/example/libusb/profile.gatt
+++ b/example/libusb/profile.gatt
@@ -68,6 +68,10 @@ CHARACTERISTIC, F108, READ | WRITE | DYNAMIC | ENCRYPTION_KEY_SIZE_16,
 CHARACTERISTIC_USER_DESCRIPTION, READ | WRITE | DYNAMIC | ENCRYPTION_KEY_SIZE_16,
 CHARACTERISTIC, 0000F109-0000-1000-8000-00805F9B34FB, READ | WRITE | DYNAMIC | ENCRYPTION_KEY_SIZE_16, 
 CHARACTERISTIC_USER_DESCRIPTION, READ | WRITE | DYNAMIC | ENCRYPTION_KEY_SIZE_16,
+// - write only
+CHARACTERISTIC, F10A, WRITE | DYNAMIC, 
+// - read/write only
+CHARACTERISTIC, F10B, READ | WRITE | DYNAMIC, 
 
 // Primary Service with 128-bit UUID, included service
 PRIMARY_SERVICE, 0000F001-0000-1000-8000-00805F9B34FB