1 files changed, 1 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index a0d2ce1399..63738c1dd4 100644
--- a/diff.h
+++ b/diff.h
@@ -59,6 +59,7 @@ struct diff_options {
 		 color_diff_words:1,
 		 has_changes:1,
 		 quiet:1,
+		 allow_external:1,
 		 exit_with_status:1;
 	int context;
 	int break_opt;