diff --git a/rtengine/dcraw.h b/rtengine/dcraw.h
index e0a6cda92..aadc0b969 100644
--- a/rtengine/dcraw.h
+++ b/rtengine/dcraw.h
@@ -19,6 +19,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <iostream>
 
 #include "myfile.h"