diff --git a/CMakeLists.txt b/CMakeLists.txt
index dffa003..f868ebf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -96,7 +96,7 @@ endif()
 
 
 include(CMakePackageConfigHelpers)
-set(CONFIG_PACKAGE_LOCATION "${CMAKE_INSTALL_DATADIR}/Bcg729/cmake")
+set(CONFIG_PACKAGE_LOCATION "${CMAKE_INSTALL_DATADIR}/Bcg729/cmake" CACHE PATH "CMake configuration file location")
 write_basic_package_version_file(
 	"${CMAKE_CURRENT_BINARY_DIR}/Bcg729ConfigVersion.cmake"
 	VERSION ${PACKAGE_VERSION}