diff --git a/spice/qxl_dev.h b/spice/qxl_dev.h
index 80e5e08..6182953 100644
--- a/spice/qxl_dev.h
+++ b/spice/qxl_dev.h
@@ -155,7 +155,9 @@ typedef struct SPICE_ATTR_PACKED QXLMemSlot {
     uint64_t mem_end;
 } QXLMemSlot;
 
-#define QXL_SURF_TYPE_PRIMARY 0
+#define QXL_SURF_TYPE_PRIMARY      0
+
+#define QXL_SURF_FLAG_KEEP_DATA    (1 << 0)
 
 typedef struct SPICE_ATTR_PACKED QXLSurfaceCreate {
     uint32_t width;