diff --git a/src/screenshot.cpp b/src/screenshot.cpp
index 47c92b400a..fbd2be2027 100644
--- a/src/screenshot.cpp
+++ b/src/screenshot.cpp
@@ -10,6 +10,7 @@
 /** @file screenshot.cpp The creation of screenshots! */
 
 #include "stdafx.h"
+#include "fileio_func.h"
 #include "viewport_func.h"
 #include "gfx_func.h"
 #include "screenshot.h"