diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73b6b8738..ff060d7be 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,7 +58,11 @@ else()
 	set(OS_FSFW "host")
 endif()
 
-target_compile_definitions(${LIB_FSFW_NAME} INTERFACE PRIVATE
+target_compile_definitions(${LIB_FSFW_NAME} PRIVATE
+    ${FSFW_OSAL_DEFINITION}
+)
+
+target_compile_definitions(${LIB_FSFW_NAME} INTERFACE
     ${FSFW_OSAL_DEFINITION}
 )