1 files changed, 1 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index 3027974c1e..c672277df2 100644
--- a/diff.h
+++ b/diff.h
@@ -153,6 +153,7 @@ extern int diff_queue_is_empty(void);
 #define DIFF_FORMAT_NAME	4
 #define DIFF_FORMAT_NAME_STATUS	5
 #define DIFF_FORMAT_DIFFSTAT	6
+#define DIFF_FORMAT_CHECKDIFF	7
 
 extern void diff_flush(struct diff_options*);