diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8be0dc8..e2de2e6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,7 +62,7 @@ add_subdirectory(third_party)
 
 add_executable(versioned_map_main VersionedMap.cpp)
 target_include_directories(versioned_map_main
-                           PUBLIC ${CMAKE_SOURCE_DIR}/include)
+                           PRIVATE ${CMAKE_SOURCE_DIR}/include)
 target_link_libraries(versioned_map_main PRIVATE nanobench)
 target_compile_definitions(versioned_map_main PRIVATE ENABLE_MAIN)