diff --git a/src/conio/CMakeLists.txt b/src/conio/CMakeLists.txt
index 21b1c421b652fbc76e0a0670f9a4c24345a7dedc..86a92cac004216802d06654af2572abacb83b8ba 100644
--- a/src/conio/CMakeLists.txt
+++ b/src/conio/CMakeLists.txt
@@ -101,7 +101,7 @@ endif()
 
 if(SDL2_INCLUDE_DIRS)
 	target_include_directories(ciolib PUBLIC ${SDL2_INCLUDE_DIRS})
-	set(WITH_SDL TRUE)
+	set(WITH_SDL TRUE PARENT_SCOPE)
 	target_compile_definitions(ciolib PUBLIC WITH_SDL)
 endif()