diff --git a/src/lib/support/FunctionTraits.h b/src/lib/support/FunctionTraits.h
index 17853a50af8c28..17f02e983a4592 100644
--- a/src/lib/support/FunctionTraits.h
+++ b/src/lib/support/FunctionTraits.h
@@ -17,6 +17,7 @@
 
 #pragma once
 
+#include <cstddef>
 #include <tuple>
 
 namespace chip {