diff --git a/include/hardware/bt_gatt_client.h b/include/hardware/bt_gatt_client.h
index 68dc3c7..f5df21c 100644
--- a/include/hardware/bt_gatt_client.h
+++ b/include/hardware/bt_gatt_client.h
@@ -315,8 +315,7 @@
 
     /** Write a remote descriptor for a given characteristic */
     bt_status_t (*write_descriptor)( int conn_id, uint16_t handle,
-                    int write_type, int auth_req,
-                    vector<uint8_t> value);
+                    int auth_req, vector<uint8_t> value);
 
     /** Execute a prepared write operation */
     bt_status_t (*execute_write)(int conn_id, int execute);