diff --git a/include/dosbox.h b/include/dosbox.h
index 51017f56..a36a76eb 100644
--- a/include/dosbox.h
+++ b/include/dosbox.h
@@ -47,6 +47,12 @@ enum MachineType {
 	MCH_VGA
 };
 
+enum SVGACards {
+	SVGA_None,
+	SVGA_S3Trio
+}; 
+
+extern SVGACards svgaCard;
 extern MachineType machine;
 extern bool SDLNetInited;