diff --git a/cmake/modules/GObjectIntrospectionMacros.cmake b/cmake/modules/GObjectIntrospectionMacros.cmake
index 365bb00..98a38e4 100644
--- a/cmake/modules/GObjectIntrospectionMacros.cmake
+++ b/cmake/modules/GObjectIntrospectionMacros.cmake
@@ -85,7 +85,7 @@ macro(gir_add_introspections introspections_girs)
       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     )
     list(APPEND _gir_typelibs ${CMAKE_CURRENT_BINARY_DIR}/${_typelib})
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${_typelib} DESTINATION lib/girepository-1.0)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${_typelib} DESTINATION ${LIB_INSTALL_DIR}/girepository-1.0)
 
   endforeach()