diff --git a/CMakeLists.txt b/CMakeLists.txt
index 676eb5f..a851b06 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,7 @@ endif()
 set(USB_ITF_CCID 1)
 set(USB_ITF_WCID 1)
 include(cmake/version.cmake)
+include(cmake/options.cmake OPTIONAL)
 include(pico_keys_sdk_import.cmake)
 if(NOT ESP_PLATFORM)
     set(SOURCES ${PICO_KEYS_SOURCES})