diff --git a/src/osd/modules/render/d3d/d3dhlsl.cpp b/src/osd/modules/render/d3d/d3dhlsl.cpp
index 190c324d764..329706a9877 100644
--- a/src/osd/modules/render/d3d/d3dhlsl.cpp
+++ b/src/osd/modules/render/d3d/d3dhlsl.cpp
@@ -16,6 +16,7 @@
 
 // MAME headers
 #include "emu.h"
+#include "drivenum.h"
 #include "render.h"
 #include "ui/uimain.h"
 #include "rendutil.h"