diff --git a/src/engine/export/amigaValidation.h b/src/engine/export/amigaValidation.h
index 14c20fa05..42703a36e 100644
--- a/src/engine/export/amigaValidation.h
+++ b/src/engine/export/amigaValidation.h
@@ -19,6 +19,8 @@
 
 #include "../export.h"
 
+#include <thread>
+
 class DivExportAmigaValidation: public DivROMExport {
   DivEngine* e;
   std::thread* exportThread;