diff --git a/src/base/io/log/Log.h b/src/base/io/log/Log.h
index 7d52e8eb..45183d1c 100644
--- a/src/base/io/log/Log.h
+++ b/src/base/io/log/Log.h
@@ -27,6 +27,7 @@
 #define XMRIG_LOG_H
 
 
+#include <cstddef>
 #include <cstdint>