diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b80ce8..485da17 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ option(BUILD_FOR_PICO "Build for Raspberry Pi Pico" ON)
 set(GEOGRAPHICLIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/geographiclib)
 
 # Configure GeographicLib before adding it, to skip docs/tools/tests
-set(GEOGRAPHICLIB_LIB_TYPE "STATIC" CACHE STRING "" FORCE)
+set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
 set(BUILD_DOCUMENTATION OFF CACHE BOOL "" FORCE)
 set(BUILD_BOTH_LIBRARIES OFF CACHE BOOL "" FORCE)
 set(PACKAGE_DEBIAN OFF CACHE BOOL "" FORCE)
@@ -21,7 +21,7 @@ if(BUILD_FOR_PICO)
     pico_sdk_init()
 
     add_subdirectory(${GEOGRAPHICLIB_DIR} EXCLUDE_FROM_ALL)
-    target_compile_options(GeographicLib PUBLIC -fexceptions -frtti)
+    target_compile_options(GeographicLib INTERFACE -fexceptions -frtti)
 
     add_executable(p-rad
         src/main.cpp