diff --git a/include/zenoh/api/shm/buffer/zshm.hxx b/include/zenoh/api/shm/buffer/zshm.hxx
index 888cab03..d650818b 100644
--- a/include/zenoh/api/shm/buffer/zshm.hxx
+++ b/include/zenoh/api/shm/buffer/zshm.hxx
@@ -14,6 +14,7 @@
 
 #pragma once
 
+#include <functional>
 #include <optional>
 
 #include "../../base.hxx"