diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0b00d30..a1410bdb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,8 +19,6 @@ if(NOT OS_FSFW)
 	set(OS_FSFW host CACHE STRING "OS for the FSFW.")
 endif()
 
-set_property(CACHE OS_FSFW PROPERTY STRINGS host linux)
-
 # Perform steps like loading toolchain files where applicable.
 include(${CMAKE_SCRIPT_PATH}/PreProjectConfig.cmake)
 pre_project_config()
@@ -91,6 +89,8 @@ add_subdirectory(${MISSION_PATH})
 # Post-Sources preparation
 ################################################################################
 
+set_property(CACHE OS_FSFW PROPERTY STRINGS host linux)
+
 # Add libraries for all sources.
 target_link_libraries(${TARGET_NAME} PRIVATE
 	${LIB_FSFW_NAME}