diff --git a/sdk_core/CMakeLists.txt b/sdk_core/CMakeLists.txt
index 461e595..a2e8d87 100644
--- a/sdk_core/CMakeLists.txt
+++ b/sdk_core/CMakeLists.txt
@@ -17,10 +17,10 @@ set(LIVOX_SDK_VERSION_STRING "${LIVOX_SDK_MAJOR_VERSION}.${LIVOX_SDK_MINOR_VERSI
 target_include_directories(${SDK_LIBRARY}
         PUBLIC
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
+        PRIVATE
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/third_party/FastCRC>"
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/third_party/spdlog>"
         "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/third_party/cmdline>"
-        PRIVATE
         src)
 
 set_target_properties(${SDK_LIBRARY} PROPERTIES PUBLIC_HEADER "include/livox_def.h;include/livox_sdk.h")