diff --git a/CMakeLists.txt b/CMakeLists.txt
index e4d2ff6..fb1c99c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,6 +3,7 @@
 cmake_minimum_required(VERSION 3.13)
 
 option(FLOW_CONTROL "Enable Hardware Flow-control on the UARTs" FALSE)
+option(LINE_CONTROL "Enable Hardware Line-control on the UARTs" FALSE)
 
 include(pico-sdk/pico_sdk_init.cmake)