diff --git a/iceoryx_utils/include/iceoryx_utils/internal/concurrent/locked_loffli.hpp b/iceoryx_utils/include/iceoryx_utils/internal/concurrent/locked_loffli.hpp
index 066b3bc947..5a72e7a357 100644
--- a/iceoryx_utils/include/iceoryx_utils/internal/concurrent/locked_loffli.hpp
+++ b/iceoryx_utils/include/iceoryx_utils/internal/concurrent/locked_loffli.hpp
@@ -66,3 +66,4 @@ class LockedLoFFLi
 } // namespace concurrent
 } // namespace iox
 
+#endif // IOX_UTILS_CONCURRENT_LOCKED_LOFFLI_HPP
diff --git a/iceoryx_utils/include/iceoryx_utils/internal/posix_wrapper/mutex.hpp b/iceoryx_utils/include/iceoryx_utils/internal/posix_wrapper/mutex.hpp
index f0f0f7d5a3..a7536cad85 100644
--- a/iceoryx_utils/include/iceoryx_utils/internal/posix_wrapper/mutex.hpp
+++ b/iceoryx_utils/include/iceoryx_utils/internal/posix_wrapper/mutex.hpp
@@ -108,3 +108,4 @@ class mutex
 } // namespace posix
 } // namespace iox
 
+#endif // IOX_UTILS_POSIX_WRAPPER_MUTEX_HPP