diff --git a/CMakeLists.txt b/CMakeLists.txt
index 16f272d..f45a7a4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,7 +40,7 @@ include(FetchContent)
 # Test from FileParse should not be visible here
 set(BUILD_FileParse_tests OFF CACHE BOOL "Build FileParse tests" FORCE)
 
-set(some_variable "test" PARENT_SCOPE)
+set(some_variable "test" CACHE INTERNAL "Some variable for subprojects")
 
 FetchContent_Declare(
     FileParse