diff --git a/spice/Makefile.am b/spice/Makefile.am
index 167b69c..a54ae89 100644
--- a/spice/Makefile.am
+++ b/spice/Makefile.am
@@ -13,6 +13,7 @@ spice_protocol_include_HEADERS =		\
 	macros.h				\
 	protocol.h				\
 	qxl_dev.h				\
+	qxl_windows.h				\
 	start-packed.h				\
 	stats.h					\
 	types.h					\
diff --git a/spice/qxl_windows.h b/spice/qxl_windows.h
new file mode 100644
index 0000000..d1df684
--- /dev/null
+++ b/spice/qxl_windows.h
@@ -0,0 +1,20 @@
+#ifndef _H_QXL_WINDOWS
+#define _H_QXL_WINDOWS
+
+#include <spice/types.h>
+
+#include <spice/start-packed.h>
+
+enum {
+    QXL_ESCAPE_SET_CUSTOM_DISPLAY = 0x10001,
+};
+
+typedef struct SPICE_ATTR_PACKED QXLEscapeSetCustomDisplay {
+    uint32_t xres;
+    uint32_t yres;
+    uint32_t bpp;
+} QXLEscapeSetCustomDisplay;
+
+#include <spice/end-packed.h>
+
+#endif /* _H_QXL_WINDOWS */