1 files changed, 2 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index 6c10ce289d..5a0c91bb48 100644
--- a/diff.h
+++ b/diff.h
@@ -701,4 +701,6 @@ void print_stat_summary(FILE *fp, int files,
 			int insertions, int deletions);
 void setup_diff_pager(struct diff_options *);
 
+extern int diff_auto_refresh_index;
+
 #endif /* DIFF_H */