1 files changed, 2 insertions, 1 deletions
diff --git a/cache.h b/cache.h
index ef2e7f93f7..f15b3fc906 100644
--- a/cache.h
+++ b/cache.h
@@ -176,10 +176,11 @@ struct cache_entry {
 /*
  * Extended on-disk flags
  */
+#define CE_INTENT_TO_ADD 0x20000000
 /* CE_EXTENDED2 is for future extension */
 #define CE_EXTENDED2 0x80000000
 
-#define CE_EXTENDED_FLAGS (0)
+#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD)
 
 /*
  * Safeguard to avoid saving wrong flags: