diff --git a/doc/walkthrough/modifying_annexed_files.mdwn b/doc/walkthrough/modifying_annexed_files.mdwn
index 1f7a7efb77..693eae9447 100644
--- a/doc/walkthrough/modifying_annexed_files.mdwn
+++ b/doc/walkthrough/modifying_annexed_files.mdwn
@@ -1,4 +1,6 @@
 Normally, the content of files in the annex is prevented from being modified.
+(Unless your repository is using [[direct_mode]].)
+
 That's a good thing, because it might be the only copy, you wouldn't
 want to lose it in a fumblefingered mistake.