diff --git a/src/gallium/winsys/r600/drm/r600_priv.h b/src/gallium/winsys/r600/drm/r600_priv.h
index 3e0fd6d..d9cb524 100644
--- a/src/gallium/winsys/r600/drm/r600_priv.h
+++ b/src/gallium/winsys/r600/drm/r600_priv.h
@@ -66,6 +66,7 @@
 #define REG_FLAG_DIRTY_ALWAYS 2
 #define REG_FLAG_RV6XX_SBU 4
 #define REG_FLAG_NOT_R600 8
+#define REG_FLAG_ENABLE_ALWAYS 16
 
 struct r600_reg {
 	unsigned			offset;