diff --git a/test/cmake_subdir_test/CMakeLists.txt b/test/cmake_subdir_test/CMakeLists.txt
index 2a13466..eca331b 100644
--- a/test/cmake_subdir_test/CMakeLists.txt
+++ b/test/cmake_subdir_test/CMakeLists.txt
@@ -8,6 +8,7 @@ project(cmake_subdir_test LANGUAGES CXX)
 
 add_subdirectory(../../../assert boostorg/assert)
 add_subdirectory(../../../config boostorg/config)
+add_subdirectory(../../../throw_exception boostorg/throw_exception)
 
 add_executable(main main.cpp)
 target_link_libraries(main Boost::throw_exception)