diff --git a/src/gallium/winsys/r600/drm/r600_priv.h b/src/gallium/winsys/r600/drm/r600_priv.h
index 78b8190..2e6a437 100644
--- a/src/gallium/winsys/r600/drm/r600_priv.h
+++ b/src/gallium/winsys/r600/drm/r600_priv.h
@@ -65,6 +65,7 @@
 #define REG_FLAG_NEED_BO 1
 #define REG_FLAG_DIRTY_ALWAYS 2
 #define REG_FLAG_RV6XX_SBU 4
+#define REG_FLAG_NOT_R600 8
 
 struct r600_reg {
 	unsigned			offset;