diff --git a/Common/Log.h b/Common/Log.h
index bb4866870a..238fbf73a4 100644
--- a/Common/Log.h
+++ b/Common/Log.h
@@ -17,6 +17,8 @@
 
 #pragma once
 
+#include <cstddef>
+
 #include "ppsspp_config.h"
 #include "CommonFuncs.h"