diff --git a/pico_hsm_sdk_import.cmake b/pico_hsm_sdk_import.cmake
index 0a5006f..2c7529f 100644
--- a/pico_hsm_sdk_import.cmake
+++ b/pico_hsm_sdk_import.cmake
@@ -29,6 +29,13 @@ endif()
 if (NOT DEFINED HSM_DRIVER)
     set(HSM_DRIVER "ccid")
 endif()
+option(ENABLE_DELAYED_BOOT "Enable/disable delayed boot" OFF)
+if(ENABLE_DELAYED_BOOT)
+    add_definitions(-DPICO_XOSC_STARTUP_DELAY_MULTIPLIER=64)
+    message("Enabling delayed boot")
+else()
+    message("Disabling delayed boot")
+endif(ENABLE_DELAYED_BOOT)
 add_definitions(-DDEBUG_APDU=${DEBUG_APDU})
 configure_file(${CMAKE_CURRENT_LIST_DIR}/config/mbedtls_config.h ${CMAKE_CURRENT_LIST_DIR}/mbedtls/include/mbedtls COPYONLY)