diff --git a/src/fru_reader.hpp b/src/fru_reader.hpp
index f54d900..4083be1 100644
--- a/src/fru_reader.hpp
+++ b/src/fru_reader.hpp
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <cstdint>
+#include <cstdio>
 #include <functional>
 #include <map>
 #include <optional>