--- a/src/backends/sqlite/SQLiteUtil.h
+++ b/src/backends/sqlite/SQLiteUtil.h
@@ -26,6 +26,7 @@
 #include <syncevo/SmartPtr.h>
 
 #include <string>
+#include <cstdio>
 
 #include <syncevo/declarations.h>
 SE_BEGIN_CXX
--- a/src/synthesis/src/sysync/binfileimplclient.h
+++ b/src/synthesis/src/sysync/binfileimplclient.h
@@ -19,6 +19,7 @@
 #define BINFILEIMPLCLIENT_H
 
 // includes
+#include <cstddef>
 #include "sysync.h"
 #include "stdlogicagent.h"
 #include "binfileimplds.h"