diff --git a/gfx/d3d/d3d.cpp b/gfx/d3d/d3d.cpp
index e9e36d87e0..1c8fe7320e 100644
--- a/gfx/d3d/d3d.cpp
+++ b/gfx/d3d/d3d.cpp
@@ -25,6 +25,7 @@
 #include "render_chain.h"
 #endif
 #include "../video_viewport.h"
+#include "../video_monitor.h"
 
 #ifndef _XBOX
 #include "../drivers_context/win32_common.h"